Who supports Israeli-Palestinian conflict and why?

Biden, Trudeau, Macron, Scholz and Sunak have issued a joint
statement on the situation in the Middle East. They reaffirmed their support
for Israel and its right to defend itself against terrorism. They called for
observing international humanitarian law, including the protection of
civilians. Currently, the focus of international attention is the
Israeli-Palestinian conflict. Who supports the opposing sides, how and why?

Details in the report.