Tehran/Washington, April 15 -- Talks over extending ongoing fragile two-week ceasefire between the US and Iran - set to expire between April 21-22 - while ongoing, have so far been inconclusive.

"The United States has not formally agreed to an extension of the ceasefire," a senior US official told CBS News on Wednesday. "There is continued engagement between the US and Iran to reach a deal."Releasing a statement, the Iranian Foreign Ministry acknowledged on Wednesday that while Tehran and Washington were engaged in indirect communication, the aim for the Islamic Republic is nothing short of a complete end to the war, a lifting of sanctions against Tehran, and reparations owed for the damages caused.

"Regarding talks and negotiations, the ...