Washington is cautiously optimistic about the ongoing ceasefire negotiations in the Gaza Strip, according to John Kirby, communications director of the US National Security Council on Friday. Kirby said “constructive” talks took place in Cairo on Thursday and would continue over the weekend. He dismissed reports suggesting the negotiations were “near collapse.” He did not provide details but emphasized the importance of maintaining momentum in the coming days. “We want to see that same sort of momentum, continue here over the next couple of days, but I don’t think it would be useful for me to …