US President Barack Obama and Israeli Prime Minister Benjamin Netanyahu are set to meet for the first time since relations deteriorated over a nuclear deal between world powers and Iran.
The Washington talks come amid weeks of unrest between Israel and Palestinians.
Six Israelis were wounded in knife attacks by Palestinians on Sunday. A Palestinian who drew a knife on Israeli guards was shot dead on Monday.
Mr Netanyahu is seeking a boost in annual US military aid for Israel.
The talks are expected to pave the way towards an increase from $3.1bn (£2bn) a year to $5bn, media reports say.
Relations between Mr Netanyahu and Mr Obama were strained over July's nuclear deal with Iran, which was bitterly opposed by Israel.
In the last week, the US has also expressed its surprise at Mr Netanyahu's choice of a new spokesman, Ran Baratz, who made controversial comments about administration officials.
On Facebook, Mr Baratz accused Mr Obama of anti-Semitism and described US Secretary of State John Kerry as having a "mental age" of no more than 12.
A US state department spokesman said the posts were "troubling and offensive". Mr Baratz will not be part of Israel's delegation.