Holed up in Saudi Arabia, the inner circle of President Hadi is rallying tribal leaders to resist Houthi rebels who control much of Yemen. The risk is that if and when they regain power the central government will emerge with little authority.
The Yarmouk camp in Damascus is home to factions that support Syrian President Bashar Assad and groups that oppose him, and it was unclear whether Palestinians from both sides of the divide had indeed agreed to join forces.
Al Qaeda in the Arabian Peninsula has continued to plot attacks on the West, even as US drone strikes pound its operatives. Those strikes are on hold since Yemen's president lost power to Houthi rebels.
The UN Security Council called Monday for protection, humanitarian access to the camp, safe passage, and evacuation for up to 18,000 Palestinians facing escalating fighting in the Yarmouk refugee camp.
Riyadh worries that lifting sanctions on Iran means greater firepower for its proxy forces, including in Yemen where a Saudi-led bombing campaign continues. Saudi Arabia also wants its own nuclear program, for what is says are peaceful purposes.