Why does Iran play to the West's pretenses?

The US and Israel have created a pretext for war with Iran based on the premise that the Persians are enriching uranium to weapon-grade purity, while international inspectors and the US' own intelligence agencies agree that no diversion for weapons is taking place.

Still, the daily diet of bullshit from the propaganda organs of the US contains morsels of tantalizing misinformation such as the following:

The Associated Press: Iran says nuclear dispute can be solved 'quickly': "TEHRAN, Iran (AP) — Iran is ready to resolve all of its nuclear disputes "quickly and easily" in a second round of talks with world powers planned for next month in Baghdad, the country's foreign minister said Monday.
Ali Akbar Salehi was quoted by the semiofficial ISNA news agency as saying that Iran might be more flexible if it could be guaranteed an external supply of enriched uranium — an apparent endorsement of a U.S. compromise proposal.
Iran's homegrown enrichment program is one of its main points of contention with the West."

One must wonder how much this concession really means -- and indeed, whether what's presented here holds any resemblance to what the Iranians intend -- much less what the US and Israel will accept.

There is, to put it plainly, no illicit activity to be curtailed in the first place, so that the accusations against the Iranian regime will continue without letup, until the intended conflict is eventually precipitated.

There is no reason whatever to assume that anything short of regime change, as in Iran, will prove satisfactory to the hegemonic powers whose sole diplomatic tactic is warfare.