National Security Advisor Jake Sullivan says the United States are both prepared "to keep moving forward down the diplomatic path in good faith" and "to respond if Russia acts" in Ukraine. "All we can do is get ready and we are ready", Sullivan tells reporters after a week of talks between the United States, its Western allies and Russia. TO COMPLETE VIDI9W62ZH_EN AND VIDI9W62W4_EN IMAGES AND SOUNDBITES