'interim regime' is correct and usable in written English.
You can use 'interim regime' to refer to a temporary government or system, usually one established after a revolution or as a precursor to a more permanent change. For example: "After the overthrow of the old regime, an interim regime was established to manage the transition to democracy."
The interim regime unites 14 opposition leaders from different parties, including past prime ministers, ministers and speakers of parliament.
In September 2013 the interim regime appointed a committee to amend the constitution written in 2012 by the Islamist-dominated Constituent Assembly. Islamist-dominated Constituent Assembly
Without that, judges are likely as they did back in March 2001 to declare the interim regime illegal and to insist on a restoration of the deposed government.
By Wednesday, it was actively backing his removal – and by Saturday, it was playing a crucial role in the interim regime that has replaced him.
He is not a big personality: in his first stint as prime minister, in charge of the interim regime that drew up Iraq's new constitution, his main characteristic was passivity.
Whereas, earlier, these leaders had calculated that participating in Ghannouchi's interim regime would serve their interests, they now seemed to be betting that it was time to join the protesters.
Both Mr. Karzai and Mr. Khalilzad were attending a conference here that marked the first anniversary of an agreement reached here on a framework to move Afghanistan from the Taliban regime to a representative interim government.
Within a few weeks, however, protesters were back in Tahrir Square, challenging the interim military regime to keep its promises about steps towards constitutional government.
Preservation of such subgroup identities in an interim Iraqi regime will only diminish the chances that a true secular democracy rises out of the ashes of Saddam Hussein's regime.
Supported by the US, Ethiopia has been after the total destruction of the UIC project in prelude to installing a puppet regime led by the warlords' "interim government".
On the one hand, it wants to see security restored to Sinai and would like the interim Egyptian regime under General Muhammad Tantawi to reassert Cairo's authority over the peninsula.
