A car bomb near a hospital in a town held by Turkey-backed Syrian rebels in northern Syria killed 11 civilians on Sunday, a monitor said.
Turkish President Recep Tayyip Erdogan will host his Russian and Iranian counterparts on Monday for their latest summit on Syria, with attention focused on Damascus's push on the last rebel-held bastion of Idlib.
Oil prices saw a record surge Monday after attacks on two Saudi facilities slashed output in the world's top producer by half, fuelling fresh geopolitical fears as Donald Trump blamed Iran and raised the possibility of a military strike on the country.
Saudi Arabia on Wednesday condemned as a "dangerous escalation" Israeli Prime Minister Benjamin Netanyahu's controversial pledge to annex the Jordan Valley in the occupied West Bank if he is re-elected.
Iran on Wednesday rejected the possibility of a meeting between President Hassan Rouhani and US counterpart Donald Trump, after the White House signalled it was open to such an encounter.
Iran said Saturday it had fired up advanced centrifuges to boost its enriched uranium stockpiles, its latest scaling-back of commitments under a crumbling 2015 nuclear deal.
Saudi Arabia's King Salman named his son as energy minister after veteran official Khalid al-Falih was sacked, state media said Sunday, in a major shakeup as the OPEC kingpin reels from low oil prices.
Iran said Monday its views have been converging with those of France on ways to save a nuclear deal at risk of unravelling since the US withdrew last year.