What does "criticizing" refer to? Is a comma needed after "resolution"?

[anhnha]

What does "criticizing" refer to? Is a comma needed after "resolution"?

Unlike the Arab group's call in March for a no-fly zone over Libya, which set the stage for the NATO action that helped topple Muammar Gaddafi, Saturday's surprisingly tough measures did not include a request for the use of force.


But they will strengthen Western powers arguing for a tough United Nations resolution criticizing Syria's suppression of protests against President Bashar al-Assad, in which the United Nations says 3,500 people have been killed.
More:Analysis: Arab moves isolate Assad, West intervention unlikely | Reuters

What does "criticizing" refer to? I think it refers to Western powers.
Is a comma needed after "resolution"?

 

[5jj]

Re: What does "criticizing" refer to? Is a comma needed after "resolution"?

The hoped for UN resolution will criticise Syria's actions. No comma is necessary.

 

[anhnha]

Re: What does "criticizing" refer to? Is a comma needed after "resolution"?

Can I ask another question?
Can I replace "a" in a request for in the sentence above by "any", any request for?

Unlike the Arab group's call in March for a no-fly zone over Libya, which set the stage for the NATO action that helped topple Muammar Gaddafi, Saturday's surprisingly tough measures did not include any request for the use of force.