[The stream is slated to start at 2 p.m. ET. Please refresh the page if you do not see a player above at that time.]
Trump has long criticized the deal, which involves lifting some sanctions on Iran in exchange for the country giving up much of its nuclear material, and has expressed a desire to pull the U.S. out of it. The president has said the deal is far more beneficial for Iran than it is for the U.S.
Withdrawing from the deal would restore the sanctions.
The Tuesday event was first announced by Trump himself in a Monday tweet.