The Department of the Treasury on Thursday included eight individuals and seven entities to its sanctions blacklist, which aims to cut them out of the global financial system.
The Treasury said the Syrian firm Hesco Engineering and Construction is operating energy production facilities in Syria, and added its Russia-based representatives to the sanctions list.
The Treasury also claimed that Yona Star International and T-Rubber are supplying the Syrian defense ministry, air force and other military bodies from their international offices and slapped sanctions on them.
Sanctions were also imposed on many individuals and businesses involved in international money transfers.
Adam Szubin, Treasury Acting Under Secretary for Terrorism and Financial Intelligence, said the Assad government is engaged in "destabilizing behavior."
"Treasury will continue to act against those responsible for fueling the Assad regime's repressive actions and dangerous weapons proliferation," Szubin added.
Since March 2011, the United States and its regional allies, in particular Saudi Arabia, Qatar and Turkey, have been conducting a proxy war against Syria.
The conflict has left more than 470,000 Syrians dead and half of the country's population of about 23 million displaced within or beyond the Arab country's borders.
In September 2014, the US and some of its allies started conducting airstrikes inside Syria against Daesh terrorists, many of whom were initially trained by the CIA to fight against the Syrian government.
In September of last year, Russia launched its own air offensive against the terrorists who were still wreaking havoc in Syria. The Russian campaign, analysts say, has broken the backbone of ISIL and other militants.
Obama and crew just cannot move past this whole "Assad must go" nonsense.
They could not oust him as President of Syria with their paid fighters; so the next best thing is to slap sanctions on Assad and Syria and hope that curbs their fight.
One would think, that given the disregard the Russians portrayed when being sanctioned, that installing sanctions on a Russian backed country will not work. This surely will not benefit the millions of refugees, most to whom were displaced by America and NATO, in returning to their homeland and just reinforces the worlds view to Washington's uncontrollable narcissistic mentality.
This new stand over tactic only increases the putrid smell of desperation on the part of Kerry and Obama.