No, he wasn't. The photo is from 1972, after Kerry was no longer a VVAW leader. Kerry's meetings with the Vietnamese communists in Paris took place in 1970. Finally, his testimony before the Foreign Relations Committee in April 1971 (note: before the photo) wasn't under oath.
Now can we get back to the thread topic?
According to the caption and text at the link, the year of the VVAW Paris meeting was 1971 while Kerry was still a leader. In any case, if the mods see fit, they can delete all of our posts on the subject.
From the link:
"The Vietnam Veterans Against The War (VVAW) sent their own delegation to Paris to meet with the representatives of the National Liberation Front (AKA Viet Cong) in 1971. At this time John Kerry was their spokesman and defacto leader.
This photograph is from the book The Winter Soldiers, by Richard Stacewicz, page 284."