The rare suicide bombing attack hit the busy market amid heightened political tensions over planned early elections and a severe economic crisis.
President Hassan Rouhani also welcomed the end of "tyrant" President Donald Trump's era.
Even if its success can't be reproduced on a global scale, Israel’s rapid rollout is a real-life test of the effectiveness of coronavirus vaccines.
The decision serves as pressure ahead of the inauguration of President-elect Joe Biden, who has said he is willing to re-enter the Iran nuclear deal.
President Donald Trump has resisted bipartisan efforts to end the American role in the war, which has claimed tens of thousands of lives. President-elect Joe Biden says he will change course.
Two U.S. B-52 bombers flew over the Middle East on Wednesday in what U.S. officials said was a message of deterrence.
A look back at the year’s most notable events, from wildfires in Australia, racial justice protests in the United States and a pandemic around the world.
No group has claimed responsibility for the explosion which struck shortly after a plane carrying the newly formed Cabinet landed.
Her continued imprisonment was likely to be a point of contention in relations between the kingdom and the incoming presidency of Joe Biden.
A team of Golden Retrievers and Labradors sit when they smell the virus and get a treat.