It's still unclear who was behind the recent assault on a military parade, but Iranian officials have pointed the finger at rivals such as the United States and Saudi Arabia for backing local separatist groups.
A review of the world's most pressing geopolitical events and insight into what the coming week will bring.
For Riyadh, the $10 billion investment represents a commercially viable alternative to a direct bailout as Islamabad struggles with a worsening foreign exchange crisis.
A proposal for an agreement limited to curtailing Iran's nuclear and missile development could signal the White House's approach to replacing the JCPOA.
The two countries reached a compromise that will prevent a major Russian-backed loyalist offensive on Syria's last rebel stronghold and defuse the mounting tension between Moscow and Ankara. But the standoff is far from resolved.
The Syrian Air Defense Force accidentally shot down a Russian aircraft, compromising the battlefield understanding between Russia and Israel in Syria.
