Ukraine and Belgium concluded an "agreement on security guarantees", as reported by the Office of the President of Ukraine. The signing ceremony took place in Brussels, where President of Ukraine Volodymyr Zelenskyi and Prime Minister of Belgium Oleksandr De Croo signed the document.
According to it, Belgium will allocate at least 977 million euros to Ukraine for military aid this year and will continue to provide support in the next 10 years. Will deliver 30 F-16 fighters by 2028, the first of which will be delivered this year.
"Belgium guarantees that it will provide timely security assistance, modern military equipment and weapons ... and will facilitate the conduct of military training," - reports on the OP's website.
Ukraine has already signed such a defense agreement with 11 countries.