Iran has said it warned off a U.S. Navy warship during a rescue of a boat in the Gulf of Oman, as American officials said there was no direct contact.

The U.S. Navy said Sunday the incident happened Wednesday and involved a small vessel some 75 nautical miles from the USS Tempest, a coastal patrol boat. The Navy said another boat much closer offered assistance, with that vessel communicating with Iranian naval forces.

Myanmar's military has been accused of planting land mines in the path of Rohingya Muslims fleeing violence in its western Rakhine state, with Amnesty International reporting two people wounded Sunday.

Refugee accounts of the latest spasm of violence in Rakhine have typically described shootings by soldiers and arson attacks on villages. But there are at least several cases that point to anti-personnel land mines or other explosives as the cause of injuries on the border with Bangladesh, where 300,000 Rohingya have fled in the past two weeks.

The Niger Basin Authority has issued a warning of possible flooding in Benin and Nigeria, two countries downstream on the river, which is currently flooding in Niger.

Chancellor Angela Merkel on Sunday dismissed a warning from the Turkish government against travel to Germany during its election season, stressing her country's commitment to "freedom of opinion and the rule of law."

Halting accession talks with Turkey would be a strategic mistake by the EU, Greek Prime Minister Alexis Tsipras said Sunday as a war of words raged between Berlin and Ankara. 

India has called for an immediate end to violence in Myanmar's western state of Rakhine, urging its ally to act with restraint as hordes of Rohingya flee to neighboring Bangladesh.

NATO Secretary General Jens Stoltenberg said Sunday that North Korea's nuclear and missile program represented a "global threat and requires a global response."

Bangladesh's foreign minister said Sunday that genocide was being waged in Myanmar's violence-racked Rakhine state, triggering an exodus of nearly 300,000 Muslim Rohingya to his country.

Russian police detained people from a crowd of about 200 protesters Sunday in Saint Petersburg who had gathered over the crackdown on the Rohingya Muslims in Myanmar.

Turkish government warnings to its citizens in Germany to be "cautious" and avoid political gatherings during election season are a "bad joke," Chancellor Angela Merkel's most senior aide said Sunday.