The Netherlands is contributing €100 million to a Czech plan to tackle the Ukrainian army’s shortage of ammunition, prime minister Mark Rutte has confirmed.

Rutte made the announcement following a meeting of 20 European leaders in Paris, organised by president Emmanuel Macron to talk about boosting support for Ukraine’s armed forces. The money will be spent on the speedy delivery of artillery shells, Rutte said on social media.

“We know that Putin is gearing up for a long war,” Rutte said. “We need to keep showing that we are steadfast and that time is not on his side.”

The Dutch government said on Friday the Netherlands and Ukraine have agreed a 10-year security treaty which includes deals on medium and long-term military support, defence industry cooperation, support against cyber attacks and help with reconstruction after the war.

The deal stems from a decision taken at the Nato summit in Vilnius last July. 

On Saturday it was two years since the Russian army invaded neighbouring Ukraine. Since then the Netherlands has provided €2.6 billion work of military aid and a further €2 billion has been earmarked for Ukraine this year. 

Macron himself said on Monday that said there was no consensus on sending troops to Ukraine, but the subject could not be ruled out. “Nothing should be excluded. We will do everything that we must so that Russia does not win,” the French president said.