The Biden administration is still assessing whether an Israeli strike that killed at least 45 displaced Palestinians at a tent camp in Rafah on Sunday is a violation of President Biden's "red line," two U.S. officials told Axios. Why it matters: Biden threatened earlier this month to suspend the delivery of some U.S.-made offensive weapons if Israel entered population centers in Rafah, the city in southern Gaza viewed as Hamas' last stronghold. U.S. officials later explained that a...