Yamas^[1] (Hebrew: יחידת המסתערבים, Yehidat HaMista'arvim) is an Israeli Border Police tactical unit. It conducts covert and special operations, counter-terrorism, irregular warfare, and high-risk arrest and search warrants.^[2] The unit is directly subordinate to Shin Bet. It uses Arab disguises to infiltrate and conduct missions in Arab territories. The unit's sniper teams have won numerous awards and are considered among the best in Israel.^[3]

You can help expand this article with text translated from the corresponding article in Hebrew. (July 2018) Click [show] for important translation instructions. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Hebrew Wikipedia article at [[:he:ימ"ס]]; see its history for attribution. You should also add the template {{Translated|he|ימ"ס}} to the talk page. For more guidance, see Wikipedia:Translation.

This article needs additional citations for verification. (January 2021)

Quick Facts Undercover Counter-Terrorism Unit, Active ...

Undercover Counter-Terrorism Unit
YAMAS
Active	1991–present
Country	Israel
Agency	Israel Border Police
Type	Police tactical unit
Role	Undercover counter-terrorism and law enforcement
Part of	Israel Border Police
Notables
Significant operation(s)	First Intifada Second Intifada

Close

• Shin Bet
• Israel Border Police
• Israeli special forces units
• Yamam
• Mista'arvim