"... Amb. Marie Yovanovich ...": Here's the Wikipedia entry for former Ambasssador to Ukraine Marie Yovanovitch.
"... Kurt Volker ...": Here's the Wikipedia bio for Kurt Volker former Special Envoy to Ukraine.
"... Simon & Garfunkle ...": Here's a video of Simon & Garfunkle singing the 59th Street Bridge Song which begins with the line Slow down, you're movin' too fast.