11.   U.S. troops have not been a part of the U.N. peacekeeping force since April.

12.   Palestinians say more than a dozen activists have been targeted and killed by Israeli forces since the current round of unrest erupted in late September.

13.   A shaky cease-fire has been in force since last month, when the foes finally came to the negotiating table.

14.   A U.S.-brokered cease-fire has been in force since October.

15.   A shaky cease-fire has been in force since last month.

16.   A tenuous truce has been in force since Friday.

17.   A shaky cease-fire has been in force since last month, when the warring sides finally came to the negotiating table.

18.   Both bin Laden and Mullah Omar have been the subjects of intense manhunts by U.S. and coalition forces since the Taliban abandoned their last stronghold of Kandahar in December.

19.   Both sides have been trying to build up forces since the fall of the rebel capital of Jaffna city in the north last December.

20.   But a cease-fire between rebels and security forces has been in force since August.