How the Kremlin is trying to make Ukrainian towns Russian, from installing puppet leaders to flying Soviet flags

Despite several military setbacks and embarrassments over the past 10 weeks, Russia has slowly gained control of a significant portion of Ukraine's territory in the south and the east.

As Russia looks to cement its stronghold on the captured Ukrainian cities, Russian authorities and their local proxies have begun removing the blue and yellow Ukrainian flags adorning government buildings and city squares and replacing them with Russian and Soviet flags.

Russian state media announced last week that it would transition the occupied city of Kherson to rubles, replacing the Ukrainian hryvnia.

The currency transition is expected to take up to four months.

Kherson, located 200 kilometers east of Odesa near the Black Sea, was the first Ukrainian city to fall to Russian forces in early March.

In the early days of the invasion, the ruble's worth plummeted to less than one penny, but the currency has since made a comeback as the Kremlin works to prop up the coin, demanding that Russian energy customers make payments using rubles.

"Using the Russian ruble is a way of emphasizing Russia's dominance over everyday life and to get citizens used to the idea," Emily Ferris, a research fellow at the Royal United Services Institute, a defense and security think tank in London, told NBC News.

Russia has attacked Kherson's telecom towers, bringing the city to its knees by controlling what information is disseminated and isolating it from the rest of the world.

Amid ongoing internet and cell service outages, Russian authorities have made sure Ukrainian residents in the city do have access to Russian state TV channels, which began broadcasting there last month.

Russian state media is a prime source of Kremlin propaganda, which is aiming to convince Kherson's residents that all is well in the occupied city, thanks to Russian troops.

Reports suggest Russia has plans to stage a bogus referendum in the Kherson region, allowing Moscow to cement its hold on the area by establishing a "breakaway region."

Intelligence from Ukraine and its allies indicate that Russia could soon hold the referendum to either create the "People's Republic of Kherson" in the same vein as the pro-Russia breakaway territories of Donetsk and Luhansk in eastern Ukraine or annex the region entirely, like it did to Crimea in 2014.

Last month, Russia replaced the mayor of Henichesk, a seaside town in the occupied Kherson region, with a pro-Russian puppet leader.

The former Ukrainian mayor of Henichesk, Oleksandr Tulupov, was last seen on March 9, according to The Guardian, posing for a photo in a town park with friends. It is unclear the current fate of Tulupov.

The Russians hacked into Henichesk's government website and said Tulupov voluntarily "resigned," the outlet reported. He has since been replaced with a new mayor, Gennady Sivak, who spent the last eight years in Russia-annexed Crimea.

Meanwhile, late last month, Kherson's mayor was relieved of duty, and replaced by Igor Katsyukevich, a Russian deputy from Putin's party, according to The Guardian.

The Wall Street Journal reported earlier this month that nearly all of the elected mayors in towns and villages that have been occupied by Russia have since been replaced by Russian military appointees.

A wedding hall in the port city of Berdyansk, located in the Zaporizhzhia region of Ukraine, is issuing Russian Federation wedding certificates to all newlyweds, according to The Wall Street Journal.

A photo of the renovated registry office shows a Russian flag hanging among flowers.

Despite a recent countrywide effort to remove Soviet monuments from Ukraine's public places, statues of Vladimir Lenin are now popping up across the country following Russia's invasion.

Following the Maidan revolution in 2014, which saw deadly clashes between Ukrainian protesters and authorities that ultimately led to the ousting of President Viktor Yanukovych, Kyiv removed the majority of its Lenin statues and Soviet monuments.

But last month, a towering figure of Soviet leader Vladimir Lenin popped up in Henichesk, outside the city's main council building, according to The Guardian.

Then, one week later, Russian occupiers erected another Lenin statue in Nova Kakhovka, also in Kherson Oblast, according to The Kyiv Independent.

"Because modern Russia stands for nothing except corruption, nihilism, and Putin's personal power, they have brought back Soviet flags as well as Lenin statues to symbolise Russian victory," Anne Applebaum told The Guardian.

Young students in the Mangush and Nikolskoye districts of Ukraine's Donetsk region have been told to write on their notebooks that they are in the Rostov region — a Russian federal district, according to The Insider, which cited Telegram reports from Ukrainian officials.

"Now schoolchildren in the Mangush and Nikolskoye districts are also told to write 'Rostov region' on their notebooks," Peter Andryushchenko, an adviser to the Mariupol mayor said.