In return, Tehran has been promised a phased, highly conditional lifting of US and EU sanctions, wholly dependent on the pace of verified implementation.
It is not clear enough for Iran, but the administration is constrained by Congress which earlier this year restated its insistence that the lifting of sanctions was dependent on a complete halt to enrichment.
A year and a half ago, Putin wanted a controllable, "federalized" Ukraine that was susceptible to Russian meddling and decisively outside of NATO; what he got was two wannabe statelets, in Donetsk and Lugansk, that are wholly dependent on Russia, and a Western sanctions regime that shows no sign of abating.
The loosening of sanctions is dependent on Iran restricting its nuclear programme.
Sanctions are dependent on a Russian-Ukraine peace deal signed last year in Minsk, Belarus.
According to the report, the venture was dependent on Vincent's belief "that sanctions against Iraq would be lifted immediately and that the Iraqi government might grant a long-term concession to an American oil company".
Sanctions make people dependent on the regime for the distribution of food.
According to the Trussell Trust, the biggest single provider of food banks, more than half of recipients were dependent on handouts owing to cuts or sanctions to their benefits.
The European Union and Canada imposed an oil embargo on Iran, and other countries, including Japan and South Korea, both of which are heavily dependent on Iranian oil imports, also imposed sanctions.
Russian sanctions removal is dependent on the country backing off its support of Donbass separatists, as well as separatists in other regions like Luhansk.
Further lessening of sanctions would be dependent on further Iranian concessions.
