Iran has launched a 24-hour English-language satellite television channel.

Iran said the channel seekis to redress the balance of world news coverage which was now in the grip of the West.

President Mahmoud Ahmadinejad told a ceremony to mark the launch that the 24-hour channel had a duty 'to reveal (what goes on) behind the scenes of the propaganda news networks of mankind's enemies'.

He said the state-owned channel should stand 'beside the oppressed nations of the world but not make news up in their favour'.

PRESS TV officials have said the channel would seek to take on established players like CNN and BBC World.

The Iranian channel faces an increasingly crowded field of English-language satellite channels after last year's launch of Al Jazeera International by the Qatar-based broadcaster and France 24, which promised a 'French vision'.

The channel says on its Web site (presstv.ir) it aims 'to break the global media stranglehold of Western outlets'.

The first broadcast, a news bulletin, went out at 1630 GMT, a PRESS TV journalist said, speaking from the newsroom.

'What we wanted to do by setting up PRESS TV was to give a medium through which the balance of reportage could be redressed,' said Shahab Mossavat, a spokesman for the channel who will also host the show 'Middle East Today' once a week.

Mossavat said the channel wanted to reach English speakers all over the world and draw in those who were dissatisfied with news coverage now available.

'There is a lot of sloppy journalism out there. I just hope we are not going to be accused of being sloppy,' he said, adding that some other channels did not 'always cover every angle'.

The Tehran-based channel has Iranians and foreigners on its staff with offices in Washington, London, Paris, Moscow, Beirut, Damascus and elsewhere.

Iran's state broadcaster already runs the Arabic-language satellite channel Al Alam and the Persian-language Jaam-e Jam.

Mossavat said PRESS TV would include criticism of Iranian policies and politics but would give Iranian officials 'the right to redress and try to balance the story'. Reuters