US Secretary of State Antony Blinken has once again called on Israel to do more to protect civilians in the Gaza Strip. “Israel must do everything it can to protect civilians and to make sure that humanitarian assistance flows into Gaza,” Blinken said on Thursday after a meeting with his British counterpart David Cameron in Washington. “The United States has made clear that Israel has to make maximum efforts to avoid civilian casualties, even as Hamas continues to use civilians as human shields.” The Israeli leadership has taken important additional steps in this direction, he said. However, t…