Palestine’s President Mahmoud Abbas said Saturday the United States was “responsible for the bloodshed” of children in Gaza after it vetoed a UN Security Council resolution calling for a ceasefire in the territory. “The president has described the American position as aggressive and immoral, a blatant violation of all humanitarian values and principles, and holds the United States responsible for the bloodshed of Palestinian children, women, and elderly in Gaza” due to its support for Israel, said a statement from Abbas’s office. Washington’s veto at a special meeting of the Security Council o…