Mideast envoy George Mitchell has threatened that the U.S. could freeze aid to Israel if the country fails to advance peace talks, YNetNews.com reported.

Mitchell said the U.S. can legally cut its support for aid to Israel and that all options must remain open, YNet reports, though he clarified on PBS that the U.S. wants to put pressure on both sides in Israeli-Palestinian peace negotiations.

The remarks come on the eve of his trip to Israel, aiming to bolster a peace process that failed to get back off the ground during the first year of the Obama administration.

"We think that the negotiation should last no more than two years," Mitchell said in an interview on PBS' "Charlie Rose." "We hope the parties agree. Personally I think it can be done in a shorter period of time."

Mitchell's comments also come days after Palestinian President Mahmoud Abbas signaled he may participate in a U.S.-backed summit with Israeli and Egyptian leaders this year.

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