Today's best photos: from Sri Lankan unrest to the Walla Walla aurora - in pictures

A burning bus in Colombo, Sri Lanka, where an anti-government demonstration near the home of President Gotabaya Rajapaksa resulted in clashes between protesters and police. AFP
A burning bus in Colombo, Sri Lanka, where an anti-government demonstration near the home of President Gotabaya Rajapaksa resulted in clashes between protesters and police. AFP
Children on their way to school as snow falls in Pamplona, northern Spain, where there are spring snow alerts in nine regions. EPA
Children on their way to school as snow falls in Pamplona, northern Spain, where there are spring snow alerts in nine regions. EPA
Ukrainian refugees to cross the border into Poland at Shehyni. Reuters
Ukrainian refugees to cross the border into Poland at Shehyni. Reuters
Two glove puppet characters battle each other, with real fire as a special effect, during a demonstration at the Taiwan studio where the Pili TV puppet series is filmed. Reuters
Two glove puppet characters battle each other, with real fire as a special effect, during a demonstration at the Taiwan studio where the Pili TV puppet series is filmed. Reuters
A US Marine takes part in the Balikatan annual US-Philippines joint military exercise in Cagayan province in the northern Philippines. AP Photo
A US Marine takes part in the Balikatan annual US-Philippines joint military exercise in Cagayan province in the northern Philippines. AP Photo
The aurora borealis puts on a show near Walla Walla, in Washington state, US, thanks to a recent strong geomagnetic storm from the sun. AP
The aurora borealis puts on a show near Walla Walla, in Washington state, US, thanks to a recent strong geomagnetic storm from the sun. AP