1.   Palestinians pushed forward at numerous checkpoints in the Old City, screaming in outrage, but the confrontations did not escalate to violence.

2.   The confrontation escalated from heated words to pushing, ultimately broken up by teammate Jim Cummins.

3.   The confrontation escalated out of control.

4.   U.S. officials had been working on potential trade sanctions and other steps if the confrontation with the EU escalated into a trade war.

5.   U.S. officials worked on potential trade sanctions and other steps if the confrontation with the EU escalated into a trade war.

6.   Palestinian youths threw stones and set tires ablaze, and the confrontation quickly escalated into shooting exchanges between the Palestinian security forces and Israeli troops.

7.   Palestinian youths threw stones and set tires ablaze, and the confrontations quickly escalated into shooting exchanges between Palestinian security forces and Israeli troops.

8.   As they loaded up their belongings to escape the shelling many residents said they feared the confrontation could escalate into an all out war.

9.   As the confrontation escalated, the government bused in more police.

10.   British Foreign Secretary Jack Straw warned Thursday that the confrontation could escalate into nuclear war.