Poland said on Saturday it would summon Russia's envoy after he said Warsaw was partly to blame for the outbreak of World War Two, continuing a spat which has seen the Polish ambassador in Moscow summoned twice in just over a week.
Russian President Vladimir Putin on Sunday branded U.S. support for rebel forces in Syria as illegal and ineffective, saying U.S.-trained rebels were leaving to join Islamic State with weapons supplied by Washington.
Iran's supreme leader has said Saudi Arabia should apologise for a crush outside the Muslim holy city of Mecca that killed 769 worshippers performing the annual haj pilgrimage, Khamenei's website said on Sunday.
On Friday morning, Chinese President Xi Jinping enjoyed the symbolic high point of his first state visit to the United States - a 21-gun salute as he stood with President Barack Obama outside the White House.
