It's a resolute message of unity and solidarity in support of Ukraine, - Poroshenko on stiffer Russia sanctions adopted by Senate

The president wrote on Facebook, Censor.NET reports.

Read more: US Senate supported more Russia sanctions

"Grateful for the support by the U.S. Congress of a new package of sanctions against Russia. This is a resolute message of unity and solidarity in support of Ukraine by the American parliament.

"I believe in the U.S. unwavering position as regards fair and inevitable punishment of the aggressor!" Poroshenko wrote.

Read more: US spent more than $600 million on Ukraine Army since 2014

The U.S. Senate passed the bill on new Russia sanction 98-2 on July 27.