Iran's President Hassan Rouhani has said the country's military should elaborate more on how it shot down a passenger plane by mistake last week.
The US has reversed its decision to brand China a currency manipulator as the two countries prepare to wind down their trade war.
US Democratic presidential candidate Cory Booker has announced he is ending his campaign after disappointing poll numbers.
Sultan Qaboos bin Said Al Said of Oman, the Arab world's longest-serving ruler, has died aged 79.
Iran has admitted "unintentionally" shooting down a Ukrainian passenger jet, killing all 176 people on board.
Iran has again rejected suggestions that one of its missiles brought down a Ukrainian passenger jet near the capital, Tehran, on Wednesday.
At least 25 soldiers have been killed in a suspected jihadist attack on a military camp along the western border with Mali, Niger's army says.
Evidence suggests an Iranian missile brought down a Ukrainian passenger plane that crashed near Tehran, possibly in error, Western leaders say.
Russia's unmanned Luna-25 spacecraft has crashed into the Moon after spinning out of control, officials say.
Donald Trump has confirmed that he will not take part in Republican presidential debates with his rivals in the race for the White House.