The White House says it offered to have an "encounter" with new Iranian President Hassan Rouhani at the United Nations.
According to a senior U.S. official,"it was too complicated for them" back home.
Still, both leaders did find the time to send a message to the other.
"We are determined to prevent them from developing a nuclear weapon," Pres. Obama said during his address the U.N. assembly.
"Iran poses absolutely no threat to the world or the region," Rouhani said.
They were in the same place at the same time. So why couldn't they meet, face to face?
OutFront: Jim Sciutto.