INTRO:
Iran's Supreme Leader Ayatollah Khamenei says his country will retaliate if the U.S. extends sanctions and breaches the Iranian nuclear agreement.
His warning follows the U.S. House of Representatives voting to re-authorise the Iran Sanctions Act for the next decade.
Here's Kevin McAleese in Washington....
IN: In an online...'
OUT: SOC
DUR: 40 secs