In a televised speech from the White House this morning, President Clinton called the Dayton meeting "the best chance" for peace as well as "the last chance." The President responded to the House resolution by saying that he would, "when the time came," seek congressional "expression of support" for sending American troops to Bosnia. But he emphasized that no troops would be going until and unless a peace is agreed to by the warring parties. TIME's J.F.O. McAllister says that Clinton "is staking an awful lot on the success of the peace talks. If they fail, he has failed and Bosnia ia s mess. There will have been a lot of pain and no gain. This is a big gamble for him."