Negotiations meant to enshrine U.S. defense aid for Israel over the next decade have snagged on disputes about the size, scope and fine print of a new multibillion-dollar package, officials say.

Five months into the talks, several U.S. and Israeli officials disclosed details about the disputes to Reuters on condition of anonymity. The U.S. and Israeli governments said negotiations were continuing, declining to elaborate.

Israel is seeking up to $10 billion more than the current 10-year package and billions more than the U.S. administration is offering, partly by asking for guaranteed funding for missile defense projects hitherto funded on an ad hoc basis by the U.S. Congress, the officials said. […]