As talk of nuclear threats gives way to promises of 'help', the Bush-era logic of regime change re-emerges.

Donald Trump declares 'help is on the way' for Iranian protesters, as calls for action against regime intensify.

Administration issues warning to US citizens: ‘Leave Iran now’

As talk of nuclear threats gives way to promises of 'help', the Bush-era logic of regime change re-emerges.

When he returned to power last year, Trump was eager to negotiate a new deal with Tehran, but a diplomatic breakthrough has been elusive