WASHINGTON (AP) — As President Barack Obama prepares to send troops to war for the first time as commander in chief, a new report says a “game-changing” strategy is urgently needed in Afghanistan to save the faltering international campaign. “All is not lost in Afghanistan,” RAND Corp. experts said in a paper being released Tuesday by the congressionally funded United States Institute of Peace. “But urgent measures — what might be called ‘game-changing steps’ — are now needed to stem an increasingly violent insurgency,” said the authors.