Pakistan Prime Minister Imran Khan has warned the US President Donald Trump to avoid going into war with Iran as it may have disastrous consequences.

A Twitter war of words has broken between the US and Iran after a leader Ayatollah Ali Khamenei slammed America and European countries for being “American lackeys”.

Reports are coming in with the information that a fresh set of rockets have slammed into an Iraqi airbase north of Baghdad where US forces have been based. Four local troops have been injured in the attack on January 12.

The US President Donald Trump on Sunday issued a warning to Iran against the killing of protesters who have been raising voice against the downing of a civilian airliner as his defense secretary left the door open to talks with Tehran without preconditions.

Iran will welcome any peace initiative from India in de-escalating tensions with US after the killing of Iranian military commander Qasem Soleimani, the Iranian envoy here said on January 8 reaffirming that they want peace and not war.

Iran on Wednesday fired ballistic missiles at Iraqi bases used by the US military, officials in Washington and Tehran said. This is the first act probably under the revenge promise for the US killing of a top Iranian general.

"What we know is that the US State Secretary (Mike Pompeo), in a call to the Secretary General of the United Nations, said: 'We did not have time to issue a visa for Mohammad Javad Zarif and we will not issue a visa'," Zarif said.

President Donald Trump reaffirmed his strong stand against Iran by claiming that the country will never be able to obtain a nuclear weapon amid rising tensions over killing of a top Iranian commander.

In a tweet defending Friday's drone strike assassination of a top Iranian general in Iraq, Trump said 52 represents the number of Americans held hostage at the US embassy in Tehran for more than a year starting in late 1979.

With United States carrying air strikes in Iran, Indian Airlines – Air India and Indigo – have been asked to avoid the airspace till things settle down between Tehran and Washington.