Canadian Prime Minister Mark Carney says he expects "difficult but constructive discussions" when he meets his US counterpart, Donald Trump, next Tuesday in Washington, DC. "You go to these meetings well-prepared, understanding the objectives of your counterpart, and always acting in the best interest of Canada," Carney tells a news conference after his recent election victory. [COMPLETES VIDI44B74T2_EN, VIDI44B439D_EN and VIDI44B42CR_EN] IMAGES AND SOUNDBITES