Relations with Australia were, until recently,^[when?] strained, with prime minister Manasseh Sogavare, accusing Australia of "heavy-handed" interference in Solomon Islands' domestic affairs, subsequently expelling Australia's high commissioner Patrick Cole. In a nationally televised address, Sogavare claimed that the Australian-led security forces in Solomon Islands had not dealt properly with the country's underlying problems.^[16]

"We are concerned that Canberra's policies are aimed at excluding and containing the peoples of the region, instead of working collectively to address fundamental problems of social instability that can only be solved through dialogue, rather than the use of development aid, and political force as leverage, to dictate Australia's involvement"

Sogavare also claimed that Australia's involvement in the region could be "driving this country down the path of another conflict that could be more serious" than the April 2006 riots that broke out after an election won by the former deputy prime minister Snyder Rini, when thousands of anti-government protesters burned down buildings in Solomon Islands' capital Honiara's Chinese district, alleging that either the People's Republic of China or the Republic of China had paid lawmakers to vote for Rini.^[17]

Sogavare's successor, prime minister Derek Sikua, almost immediately set out to mend relations with Australia upon assuming office in December 2007.^[18]

In late March 2022, the Solomon Islands Government confirmed that it was drafting a security pact with China that would allow the deployment of Chinese military and security forces in the country, naval deployments, and the establishment of a military base. This acknowledgement came after a draft of the security agreement was leaked online. In response, the Australian and New Zealand Governments expressed concerns that the establishment of a Chinese military presence in Solomon Islands would have serious implications for peace and security in the Pacific region.^[24][25][26] In response, the Chinese Government defended law enforcement and bilateral cooperation with Solomon Islands and disputed Australian criticism that Beijing was coercing Solomon Islands.^[27]

In the late 2000s, Solomon Islands began to strengthen their relations with Cuba.

In April 2007, the Solomon Star reported that Solomon Islands' high commissioner to the United Nations was soon to be sworn in as ambassador to Cuba.^[28] In September 2007, it was announced that 40 Cuban doctors would be sent to Solomon Islands.^[29] The Solomons’ Minister of Foreign Affairs Patterson Oti said that Solomon Islander doctors would "learn from their Cuban colleagues in specialised areas".^[30] In addition to providing doctors, Cuba provided scholarships for 50 Solomon Islanders to study medicine in Cuba for free.^[31]

In September 2008, Solomon Islands' foreign minister William Haomae attended the first Cuba-Pacific Islands ministerial meeting in Havana, aimed at "strengthening cooperation", notably in coping with the impact of climate change.^[32]

In July 2014, Solomon Islands prime minister Gordon Darcy Lilo opened Solomon Islands embassy in Havana, thus becoming the first Pacific Island country to have an embassy and resident ambassador in Cuba.^[33]

• Both countries established diplomatic relations on 5 May 2010.^[34]
• Cyprus is represented in Solomon Islands via parallel accreditation of its embassy in Canberra, Australia.^[35]
• Both countries are full members of Commonwealth of Nations.

In August 2008, it was announced that Solomon Islands intended to open a High Commission in Suva,^[36] and in December the government of Fiji announced that it had "formally endorsed the establishment of a Resident Diplomatic Mission in Suva by the Government of Solomon Islands".^[37] Fiji's High Commission to Papua New Guinea is accredited to Solomon Islands.

• Both countries established diplomatic relations in 1987.^[38]
• Greece is represented in Solomon Islands via parallel accreditation of its embassy in Canberra, Australia.^[38]

Diplomatic relations between India and Solomon Islands were established in May 1987.

Diplomatic relations between Japan and Solomon Islands were established on 7 July 1978, the date the Solomon Islands became independent. Japan maintains an embassy at Honiara.^[39]

Malaysia has an honorary consul in Solomon Islands while Malaysia high commission in Port Moresby also accredited to the country,^[40] and Solomon Islands has a high commission in Kuala Lumpur.^[41][42][43]

• Both countries established diplomatic relations on 18 October 1989.^[44]
• Both countries are full members of Commonwealth of Nations.

• The Netherlands is represented in Solomon Islands by its embassy in Canberra, Australia.^[45]
• Solomon Islands is represented in the Netherlands by its embassy in Brussels, Belgium.^[46][47]

New Zealand is represented in Solomon Islands by its High Commission in Honiara.^[48] Solomon Islands is represented in New Zealand by its High Commission in Wellington.^[49]

In response to civil conflict within the Solomon Islands, New Zealand contributed defence and civilian personnel to the Australian-led International Peace Monitoring Team (IPMT) following the Townsville Peace Agreement in October 2000. Between 2003 and 2017, New Zealand contributed both military and law enforcement personnel to the Regional Assistance Mission to the Solomon Islands (RAMSI).^[50]

In March 2015, the New Zealand journalists Nicky Hager and Ryan Gallagher reported that NZ's signals intelligence agency, the Government Communications Security Bureau (GCSB), was using the internet mass surveillance system XKeyscore to intercept email communications from several senior Solomon Islands government ministers, the Solomons Islands Truth and Reconciliation Commission, and anti-corruption campaigner Benjamin Afuga.^[51] In response, the New Zealand Foreign Minister Murray McCully sought to reassure the Solomon Islands Government's concerns about New Zealand's mass surveillance program. The Solomons Chief of Staff, Robert Iroga, objected to the GCSB's tapping of his government's internal communications, which in his view damaged New Zealand's image as a "friendly government" in the South Pacific.^[52]

In March 2022, Prime Minister Jacinda Ardern supported Australia's concerns about a planned security pact between China and Solomon Islands; claiming that it would lead to the militarisation of the South Pacific.^[53]

Solomon Islands and Pakistan established foreign relations in February 2016, when high commissioner designate Naela Chohan, Pakistan's ambassador resident in Canberra, arrived in Honiara to sign an accord with minister for foreign affairs Milner Tozaka for the formal establishment of diplomatic ties.^[54] A Joint Communique issued by the two senior officials remarked upon numerous areas of cooperation, including education, and policing, as well as bilateral trade ties.^[55]

Relations between the current governments of Prime Minister Derek Sikua (Solomon Islands) and prime minister Michael Somare (Papua New Guinea) are, at present^[update], cordial.^[56]

Solomon Islands and the Republic of Korea have established diplomatic relations on September 15, 1978.

• Solomon Islands and South Korea have nice diplomatic relations.^[57]

Solomon Islands and Switzerland established formal diplomatic relations on 20 December 2007, when representatives of both nations signed a joint communiqué in Canberra.^[58] Beraki Jino, High Commissioner of Solomon Islands to Australia, and Christian Muhlethaler, Ambassador of Switzerland to Australia, signed the agreement on behalf of their respective governments.^[58]

• Turkish ambassador in Canberra to Australia is also accredited to Solomon Islands.^[59]
• Trade volume between the two countries was negligible in 2019.^[59]

Ukraine is represented in Solomon Islands by its embassy in Canberra, Australia.^[60]

King Charles III is, severally, the head of state of both the United Kingdom and Solomon Islands. Although the two offices are vested in the same person, he exercises his role as King of Solomon Islands independently of his role as the King of the United Kingdom, consequently, the United Kingdom itself has no jurisdiction in Solomon Islands.^[61] Both the United Kingdom and Solomon Islands are members of the Commonwealth of Nations, and participate in events such as the Commonwealth Games.

Bilateral relations with the UK remain strong. The UK's bilateral aid programme in Solomon Islands ended in early 2004 when the UK's regional aid programme came to a close. However, UK funding through the EU, the largest multilateral donor to Solomon Islands, will continue. The UK contributes almost 15% of the EU development budget in Solomon Islands. The Foreign and Commonwealth Office assistance to Solomon Islands is focused on security sector reform, good governance, sustainable development and poverty alleviation. Among the activities supported in the last two years are: education on HIV/AIDS, rural clinics, collective farming and empowerment of women. Sir Nathaniel Waena, the Governor-General of Solomon Islands, visited the UK in 2006 to celebrate the Queen's 80th Birthday. Assistance is also provided through the Commonwealth of Nations, whose budget is supported by the United Kingdom.

The United Kingdom is one of only six countries to maintain a resident ambassador in Honiara, the High Commissioner of the United Kingdom to Solomon Islands.^[62] The current High Commissioner, since 2016, is David Ward.^[63] The British High Commission in Honiara represents British interests in the country and assists British citizens resident in, or visiting the country. The High Commission also funds local projects and assists in scholarships in the United Kingdom for Solomon Islands citizens.

Solomon Islands is represented in the European Commission in Brussels, Belgium, by the Solomon Islands Ambassador, who is also accredited as High Commissioner to the United Kingdom.

• Solomon Islands are accredited to the United States from its Permanent Mission to the United Nations in New York City.
• United States has an embassy in Honiara.^[64]

In October 2008, Solomon Islands prime minister Derek Sikua moved to establish economic relations with Venezuela, hoping to benefit from comparatively cheap Venezuelan oil. In a rare display of bipartisanship, Solomons Opposition leader Manasseh Sogavare praised his political rival for this move, stating that -in the context of the financial crisis of 2007–2008, it would bring down the price of oil for Solomon Islanders, and boost the economy if the Solomons imported crude Venezuelan oil, refined it and then exported it to neighbouring countries.^[65]