Live: Latest on US and Iran as negotiations reach critical stage

US President Donald Trump will convene a cabinet meeting as negotiations between the United States and Iran enter a crucial phase, according to White House officials. Meanwhile, Iranian parliament speaker Mohammad Bagher Ghalibaf returned to Iran on Tuesday after concluding a visit to Qatar, where he held discussions with Qatari officials on the progress of US-Iran negotiations and regional developments. Join CGTN for the latest. #CGTNOnSite