The mayor of Germany's once divided capital invoked the memory of the Berlin Wall on Friday to condemn US President Donald Trump's proposed border wall with Mexico.

The state's press department issued a dramatic plea from Michael Müller referencing the city's infamous Cold War era divide.

"We Berliners know best how much suffering was caused by the division of an entire continent with barbed wire and concrete," he wrote.

Michael Mueller, an SPD politician, has been mayor of Berlin since 2014

"Berlin, the city of a divided Europe, the city of a free Europe, cannot stay silent when a country plans to erect a new wall"

"In the end we the people overcame this division, and it is one of the 20th century's star-studded hours when, at the Brandenburg Gate, the most important symbol of the division, people conquered the Wall and then tore it down piece by piece.

"Now, at the beginning of the 21st century, we can't just accept it if all our historical experiences are tossed aside by those to whom we largely owe our freedom, the Americans."

"I appeal to the President of the United States not to go along this tortuous path of isolation and exclusion. Wherever such borders still exist today in Korea, in Cyprus, they create a lack of freedom, and suffering."

"I call to the American President: Think of your predecessor Ronald Reagan. Remember his words: 'Tear down this wall.' And so I say: Dear Mr. President, don't build this wall!"

Müller's comments referenced former US President Ronald Reagan's 1987 challenge to then Soviet leader Mikhail Gorbachev to demolish the wall that divided the city from 1961-1989.

Thousands of people braved death to attempt to cross the border, which stood as a symbol for the Iron Curtain

Anti-Facist Protective Wall

The first phase of the Wall, known as the "Anti-Fascist Protective Wall" in the Soviet-controlled German Democratic Republic was erected by East German troops overnight. It completely cut off West Berlin from surrounding East Germany and immediately halted the flood of defectors to West Germany. Over its lifespan thousands of people attempted to escape with hundreds dying in the process.

In a speech at the Brandenburg Gate commemorating the 750th anniversary of the city, Reagan called for freedom and peace.

"General Secretary Gorbachev, if you seek peace, if you seek prosperity for the Soviet Union and eastern Europe, if you seek liberalization, come here to this gate. Mr. Gorbachev, open this gate. Mr. Gorbachev, tear down this Wall," he said.

Mueller's plea came two days after Trump signed an executive order for the "immediate construction of a physical wall on the southern border," to counter illegal immigration from Mexico.

The 'huge' walls of the world "We are going to build a wall" The border wall with Mexico was the signature promise of now President Donald Trump's election campaign, standing out from the storm of controversial and often contradictory campaign statements. Once elected, Trump quickly set the wheels in motion by ordering the construction to start. Experiences from around the world, however, show that massive barriers do not come easy - or cheap.

The 'huge' walls of the world "…and Mexico is going to pay for it." The so-called "Tortilla Wall" already spans some 700 miles (1,126 kilometers) of the US-Mexico border. Experts believe that the US would need to pay between $15 billion and $25 billion in order to fully wall-off the entire southern frontier. US President Trump has said it would cost less and that Mexico would foot the bill.

The 'huge' walls of the world Wall of fear in Jerusalem Israel started building its own controversial barrier in 2002, with construction continuing to this day. The structure is expected to stretch at least 650 kilometers (403 miles) across the Holy Land, most of it consisting of an electric wire fence. Observers believe its cost has already topped $2.6 billion (2.4 billion euros), with maintenance costs reaching $260 million per year.

The 'huge' walls of the world The symbol of divided city The Berlin Wall spanned 155 kilometers (91 miles) before its demolition in 1991. Unlike the many other walls across the world, the barrier was built by East Germany to keep the would-be emigrants inside the country. It cost about $25 million to build in 1961, equivalent to $200 million (almost 186.5 million euros) in present-day money.

The 'huge' walls of the world The Korean DMZ - the most fortified border in the world Capitalist South Korea and its Communist northern neighbor are divided by barbed wire and watchtowers, as well as around 1 million landmines. Following the 1953 truce, both Pyongyang and Seoul agreed to pull their troops 2 kilometers (1.24 miles) away inland, creating a demilitarized zone along the border that stretches 248 kilometers (154 miles).

The 'huge' walls of the world 'Peace lines' run through Belfast A total of 48 "peace lines" separate Catholic and Protestant neighborhoods in Belfast, a legacy of centuries-long religious war. The barriers including high brick walls, concrete structures, barb wire and metal bars. These barricades include gates to allow for circulation of people and traffic, but the gates close after nightfall.



The two countries were facing their biggest diplomatic rift in decades over Trump's insistence that Mexico pay for construction of a wall along their 3,200-kilometer (2,000-mile) border.

The dispute prompted President Enrique Pena Nieto to scrap a meeting with Trump in Washington next week after the American President posted on Twitter that it would be better to cancel if Mexico wasn't willing to pay for his proposed wall.

People in Mexico were debating how to fight back against Trump's aggressive stance on trade and immigration.

Prominent political figures suggested the country could expel US law enforcement agents, stop detaining Central American migrants or no longer inspect northbound trucks for drug shipments.

aw/bw (dpa, AFP, AP)