[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2008/POLITICS/12/29/obama.gaza/art.obama.gaza.gi.jpg caption=" Barack Obama reiterated his support for Israel when he visited Sderot in July."]
(CNN) - As the violence rages in Gaza, President Bush is putting the blame squarely on Hamas, while President-elect Barack Obama is keeping a low profile and sticking by his belief that "there is only one president at a time."
But with less than a month until the inauguration, the president-elect could inherit an international crisis - one he will not be able to defer to Bush.
Israeli airstrikes pummeled Gaza for a third day Monday as part of what Israel's defense minister called "an all-out war" with Hamas. Israel says the attacks are a response to escalating rocket attacks against southern Israel.
Israel has tanks on the border and has approved the call-up of 2,000 reservists, but there was no indication of a Israeli ground incursion Monday. However, Israeli politicians say that all options are on the table.