Joe Biden's logic when it comes to foreign conflicts not involving the United States: if you are an American ally fighting a semi-traditional war with a uniformed enemy, we'll back you to the hilt (Ukraine). If you are an American ally battling a terrorist group that takes hostages and hides among civilians, you must pre-emptively surrender (Israel). 

In short, the more evil you are, the more the Biden administration flies cover for you and places restrictions on America's allies.