Israel's GDP is $513 Billion.
The US gave Israel $12.5 billion in 2024 during the Gaza war. That's about 2.4% of Israel's GDP.
For comparison, 2.4% of the UK's GDP is £69 billion. That's about what we spent on Covid Furlough. Painful, but possible as a once-off
The more usual $3 billion which the US give Israel in an average year is 0.6% of Israel's GDP.
For comparison, 0.6% of the UK's GDP is £17 billion. That's about 8% of our NHS spending.
It's a significant amount of aid, and it would be painful to Israel to lose it, but it isn't make-or-break.
It's completely different to the $183 billion the US have given Ukraine in the last 3 years. Ukraine's GDP is about $179 billion. So that's 34% of Ukraine's GDP every year for 3 years. (Just from the US).