Defense Minister Ehud Barak has been quoted in a French newspaper as saying he does not know how long the cease-fire between Israel and Hamas will last. Barak, who is visiting France, was quoted in the daily Le Monde on Thursday as saying that the two sides were on a historic collision course. According to the paper, Barak said he did not know whether the cease-fire would last "two days or two months." Still, he said it made sense to try it. Barak also said the international community should impose tougher sanctions on Iran over its nuclear program.