NATO member countries are not delivering “enough ammunition” to Ukraine’s armed forces, and this has “consequences on the battlefield every day,” NATO Secretary General Jens Stoltenberg warned on Thursday.

“The Ukrainians don’t lack courage, they lack ammunition,” he insisted during a press conference in Brussels.

More than two years after the outbreak of war, the Ukrainian military is facing shortages of personnel and equipment and is calling for ammunition and air defense systems to stop the Russian army, which has gone on the offensive.

“NATO allies are not supplying enough ammunition to Ukraine and this has consequences on the battlefield every day,” Mr Stoltenberg said.

“This is a huge challenge and one of the reasons why the Russians were able to make some advances on the battlefield,” he said.

“The US, Canada and Europe need to do more and we need long-term commitments,” said the Norwegian, who is not going to demand that the member states of the alliance do more for Ukraine.

The problem is not the lack of capabilities of the defense industries, he assured, it is a matter of the necessary “political will” to “take decisions and prioritize our support to Ukraine.”

Concerns that Ukraine could lose the war with Russia, lacking sufficient quantities of weapons and ammunition, appear to have intensified in recent weeks as Russian troops advance along the contact line.

Ukrainian President Volodymyr Zelensky called on his Western allies in late February to deliver “timely” military aid to his country.

The $60 billion funding package that President Joe Biden’s administration is asking Congress to approve to continue U.S. military aid to Kiev remains deadlocked, attributed to the hesitancy of congressional allies of Donald Trump.

However, the White House announced on Tuesday about $300 million (274 million euros) in aid to Ukraine, consisting of anti-aircraft missiles, artillery shells and other munitions.

For their part, the Europeans agreed on Wednesday to add 5 billion euros to the fund for military aid to Ukraine.