Last month, the US handed Syria a list of eight conditions it hopes to meet Damascus, including destroying remaining stockpiles of chemical weapons and preventing foreigners from being given the role of senior management.
Syria desperately needed sanctions relief to kickstart the economy that had collapsed in a 14-year war, during which the US, the UK and Europe imposed severe sanctions to put pressure on former President Bashar al-Assad.
In January, the US issued a six-month exemption for sanctions to promote aid, but this had limited effect.
In exchange for meeting all US demands, Washington could extend its suspension for two years and perhaps issue another exemption, sources told Reuters in March.
Reuters first reported that at a face-to-face meeting on the sidelines of the Syrian Donors Conference in Brussels on March 18, they handed over a list of Syrian conditions to Syrian Assad al-Shabani.
In his first address to the UN Security Council on Friday, Shibani tried to show that Syria is already working on demand, including searching for chemical weapons and the missing Americans in Syria.
His public comments were consistent with the contents of Syrian private letters to the United States. Its contents have not been reported previously.
He said two Western and Syrian officials were featured in the letter. It said it matches the copy seen by Reuters.
The four-page document details the work Syria pledges to establish a liaison office in the Ministry of Foreign Affairs, finding missing journalist Austin Teis and working on a stockpile of chemical weapons, including a close relationship with the Global Arms Watchdog.
However, according to the letter, there was little to say about other important requests, such as eliminating foreign fighter jets or giving US permission to counter-terrorist strikes.
MNA/