Some senior U.S. officials have advised Secretary of State Antony Blinken that they do not find "credible or reliable" Israel's assurances that it is using U.S.-supplied weapons in accordance with international humanitarian law, according to an internal State Department memo reviewed by Reuters.

Other officials upheld support for Israel's representation.

Under a National Security Memorandum (NSM) issued by President Joe Biden in February, Blinken must report to Congress by May 8 whether he finds credible Israel's assurances that its use of U.S. weapons does not violate U.S. or international law.