On Saturday, Palestine's United Nations envoy Riyad Al-Mansour criticized the UN Security Council's failure to adopt a draft resolution for a humanitarian ceasefire in Gaza.
The United States (US) vetoed the resolution. The resolution was backed by 13 Security Council members.
In the same context, the United Kingdom abstained from voting.
Mansour said: "Instead of allowing this council to uphold its mandate by finally making a clear call, after two months, that atrocities must end, the war criminals are given more time to perpetuate their crimes. How can this be justified? How can anyone justify the slaughter of an entire people?"
Mansour renewed his call for a ceasefire, saying "every further day means lives lost, people killed at an unprecedented pace in modern history."