Mykhailo Podolyak, an adviser to Ukraine's presidential administration, suggested that the demilitarised zone be between 100 and 120 km broad.
Any post-war solution should include the establishment of a demilitarised zone between 100 and 120 kilometres wide (62 to 75 miles) in Russian border area with Ukraine, according to an expert to the Ukrainian presidential office.
The demilitarised zone should defend neighbouring Ukrainian areas by include the Russian provinces of Belgorod, Bryansk, Kursk, and Rostov, according to Mykhailo Podolyak, adviser to the head of the Office of the President of Ukraine.
"It will be necessary to introduce a demilitarisation zone of 100-120km to ensure real security for residents of Kharkiv, Chernihiv, Sumy, Zaporizhzhia, Luhansk, and Donetsk regions and protect them from shelling," Podolyak stated in a tweet on Monday.
Such a zone, which is off-limits to military operations, would probably call for "a mandatory international control contingent at the first stage," according to Podolyak.
The presidential adviser, who has 1.2 million Twitter followers, stated that a demilitarised zone should be a "key topic" of a post-war settlement and that it would "prevent the recurrence of aggression in the future" if one were to be established.
The notion of demilitarised zones is similar to hospital zones and other locations designated neutral during wars, according to the International Committee of the Red Cross, and there are specific guidelines for their establishment and designation.
Volodymyr Zelenskyy's advisor said on Monday that Ukraine has no interest in any ceasefire that secured Russian territorial gains.
Also opposing international peace overtures from China, Brazil, the Vatican, and South Africa was chief diplomatic adviser Ihor Zhovkva, who asserted that the time for mediation with Moscow had gone.
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