Following President Obama’s decision to seek congressional support for a military response to the Syrian chemical weapons attack, and ahead of this week’s G20 Summit in St. Petersburg, Marwan Muasher and Andrew S. Weiss will hold a Twitter Q&A. They will respond to questions on the situation in Syria, the likely implications of a U.S.-led attack, and what to expect in terms of Putin-Obama dynamics at the G20 meeting.

Submit questions to @CarnegieEndow on Twitter using #AskCarnegie prior to and during the event.