NEW DELHI The U.N. peacekeeping chief warned Tuesday that the "indispensable" role played by peacekeepers was facing challenges due to budget cuts, as funding shortfalls translate into troop reductions. "We do not have a choice but to implement these reductions, which are due to the partial non-payment by some states," Under-Secretary-General for Peace Operations Jean-Pierre Lacroix told representatives from 32 U.N. troop-contributing countries. "The international community is divided," he said