Remaining Ukrainian forces in the southern port of Mariupol are still fighting and continue to defy a Russian demand that they surrender, Ukrainian Prime Minister Denys Shmyhal said on Sunday.
"The city still has not fallen," Shmyhal told ABC's "This Week" program, adding that Ukrainian soldiers continue to control some parts of the city.
"So there is no whole control" of Mariupol by Russian forces, Shmyhal said. "There's still our military forces, our soldiers. So they will fight to the end."
In a sign of the desperate situation facing the surrounded forces, Ukrainian President Volodymyr Zelensky said Saturday that if they were killed, peace talks with Moscow would be scrapped.
Russian President Vladimir Putin had already said the talks were at a "dead end."
Shmyhal said on Sunday that Ukraine wanted a diplomatic solution "if possible," but added: "If the Russians wouldn't like negotiations, we'll fight to the end, absolutely. We will not surrender.
"We won't leave our country, our families, our land. We will fight to the end."
Asked about reports that Putin believes Russia is winning the war, Shmyhal pushed back.
While several cities are under siege, he said, not one -- with the exception of Kherson in the south -- had fallen. He said more than 900 towns and cities had been liberated.
The capture of Mariupol, however, would represent a severe blow to Ukraine, both strategically and symbolically, as it would help Moscow open a land route to the Russian-occupied Crimean peninsula.
Shmyhal again implored Western countries to send more ammunition and weapons to bolster outmanned Ukrainian forces, while also pleading for more financial help.
The country, he said, is seeing a "huge humanitarian catastrophe," and needs further help "to save our economy for future recovery."
"Now, only half of our economy is working" and Ukraine faces a huge monthly budget deficit of $5 billion, Shmyhal said.
He said Ukrainian officials would be in Washington in the coming week to press the country's needs at the spring meeting of the World Bank and International Monetary Fund.
EU COMMISSION HEAD URGES SWIFT WEAPONS SUPPLY TO UKRAINE 
