The US government says allegations that Israeli forces buried more than three hundred Palestinians in a mass grave at a medical complex in Gaza are incredibly troubling. A spokesman for the US state department said it was seeking a response of the Israeli government. Israel's military had earlier rejected the Palestinian allegation as baseless and unfounded. Also the US Senate is set to vote later today on a major aid package for Ukraine, with its passage all but certain after the House of Representatives approved the assistance with broad bipartisan support. And more than a hundred and thirty people have been arrested during pro-Palestinian demonstrations at New York University in the United States.