Former Deputy Prime Minister of Ukraine Ivanna Klympush-Tsintsadze told BBC Scotland that other countries could impose tougher sanctions and there are “many opportunities to help Ukraine.”
Her comments came after Russian President Zelensky said 137 Ukrainian citizens — both soldiers and civilians — had died on Thursday in a massive Russian strike launched by President Putin.
The UN reported that 100,000 people in the capital, Kiev and elsewhere had fled.
Ms Klympush-Tsintsadze told the BBC’s Good Morning Scotland that there was fighting in the streets and explosions were heard all over Kiev, damaging civilian buildings.
She said: “I am counting on our military.
“We, Ukrainians, are fighters and we are doing everything possible on our territory to protect our city and our country.”
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The vice premier said: “I think the world should impose much more severe sanctions on the Russian Federation,” adding that “immediate response and sanctions” are critical.
She said: “Putin will not stop his attacks on Ukraine. He wants Ukraine under control, and he wants a new world order in which he will have the final say.”
“This is a miscalculation of the Western nations that the situation will somehow be resolved for the Ukrainian people.
“We saw him attack Georgia in 2008, we saw him attack us in 2014 – the war has been going on ever since, just on a smaller scale.”
Asked if the West could have prevented the attack on Ukraine, Klympush-Tsintsadze replied: “Yes, I think so.
“If the sanctions had been taken as a pre-emptive measure, it could have somewhat deterred him. I think you underestimated the madness of the dictator.”
Klympush-Tsintsadze said that this situation could lead to a new world war: “Putin is not going to stop in Ukraine. If he conquers Ukraine, other peoples and their future will be at stake.”
President Zelensky called on Western leaders to encourage anti-war protests in Russia as he said the Ukrainian side had suffered heavy losses and Russia had suffered heavy losses.
His comments came after First Minister Nicola Sturgeon said “this is not the time for half-measures” about the sanctions imposed on Russia.
Nicola Sturgeon has previously said that Vladimir Putin should “feel the wrath of the democratic world” after Russia launched a “full-scale invasion” of Ukraine.
The Scottish First Minister said Russian military action meant that “Ukraine’s very existence as an independent democracy is now in jeopardy.”
She made it clear that she condemned “in the strongest possible terms the unprovoked imperialist aggression of Vladimir Putin.”
Ukrainian Vice Prime Minister for European and Euro-Atlantic Integration Olha Stefanishyna also urged other world leaders to take action to stop Putin.
She said: “We are calling on world leaders to take immediate action to stop the aggressor: tough economic and financial sanctions, including cutting off SWIFT; an embargo on oil and gas trade, arms assistance to the army, a UN peacekeeping mission and security guarantees for Ukraine.”