Ukrainian President Volodymyr Zelenskyy says his country has received just 10 percent of aid approved by the US Congress.

Ukraine relies on military support from Western countries to fight against Russia's invasion. The US, Ukraine's biggest supporter, decided on an aid package worth 60.8 billion dollars in April.

Zelenskyy told reporters on Wednesday that if his country gets just 10 percent of the package, it is "not funny."

He said his country had planned its military actions relying on the promised assistance. He added that if a country makes a promise, it should keep it.

He also called on the US and other countries to swiftly provide military aid, saying Ukraine will not be able to maintain defense lines without any concrete action plans.