US stocks close mixed as traders digest Fed chair's messageUS oil imports up, exports down last weekSwiatek returns to Madrid Open final by beating Keys in straight setsIran set to retaliate for Israel's consulate attack in Syria: Experts6 new plant species discovered in China's GuangxiMaryland officials release timeline, cost estimate, for rebuilding bridgeIPL form barely considered for India T20 World Cup squad, skipper Sharma saysEgyptian, French FMs discuss Gaza developments, truce proposalChina expresses grave concerns over Japan's planned export controlsUS student protests continue, with over 270 arrests on weekend