No-one ever bothered to arrest Arafat, the master terrorist and murderer. The Lybian "president" is treated like royalty, the Iranian "president" is free to come and go as he pleases. Small sampling of those known to be behind mass murder across the world, and UK wants to arrest the Israeli minister for daring to defend the country.
Ya'alon okays administrative detention of Jewish extremist suspected in church arson (Haaretz)
from the article: U.K. court defers Palestinian bid to arrest Ehud Barak