President will meet Castro tomorrow, but not his infamous brother, Fidel

Donald Trump accused Cuban dictator Raul Castro of 'disrespecting' Barack Obama after the communist leader failed to greet the president as he arrived in Havana.

The front runner for the Republican presidential nomination said Obama's historic visit to Cuba was 'a big deal' and that Castro should have been there to shake the president's hand on arrival.

Obama, who arrived at Havana international airport on Sunday afternoon, was instead met by Cuba's foreign minister Bruno Rodriguez - and a deluge of pouring rain.

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Donald Trump accused Cuban dictator Raul Castro of 'disrespecting' Barack Obama after the communist leader failed to greet the president as he arrived in Havana

Obama, who arrived at Havana international airport on Sunday afternoon, was instead met by Cuba's foreign minister Bruno Rodriguez (left) - and a deluge of pouring rain.

Trump (left) said Obama's historic visit to Cuba was 'a big deal' and that Castro (right) should have been there to shake the president's hand on arrival.

Trump, who has previously backed Obama in thawing relations with the communist island state, said Castro should have made more effort.

'Wow, President Obama just landed in Cuba, a big deal, and Raul Castro wasn't even there to greet him. He greeted Pope and others. No respect,' Trump tweeted.

The billionaire real estate mogul last year said 'the concept of opening with Cuba is fine', but said President Obama had not struck a good enough deal with Castro.

Trump did not elaborate on what any such deal lacked or what he would have done differently if he was commander-in-chief.

The real estate mogul's comments came as Obama landed in Havana, alongside his wife Michelle, children Sasha and Malia and the First Lady's mother, Marian Robinson.

Obama will meet Castro tomorrow, but will not meet the dictator's infamous brother, Fidel Castro, who handed over the reins of power in Cuba to his sibling in 2008 after a decline in his health.

Rain on their parade: The Obamas looked less than impressed by the rain as it fell on them while they toured Old Havana after landing in Cuba on Sunday evening

Taking shelter: The Obama family did their best to stay dry as they were taken around the old town in the first hours of their historic visit

The president appeared to be explaining something to his daughter Malia as they were guided around Old Havana on a rainy evening

WHO IS RAUL CASTRO? Raul Castro was a commander during his brother's revolution of Cuba and overthrow of Western backed dictator Fulgencio Batista. As a result of the 1953 26th of July Movement, he spent 22 months in prison in Mexico. He escaped from Mexico along with 81 other exiled revolutionaries and made it back to Cuba in 1956. His kidnapping of 34 Americans and two Canadians in June of 1958 almost led to military intervention in the revolution by the United States. The hostages were eventually released. On January 1, 1959, the Castros and Che Guevara successfully forced Batista out of Cuba and into exile. Having wrangled control of the country, Fidel made his right-hand man and brother the head of the nation's army - a position Raul held until his brother formally passed on power to him in 2008. Raul Castro modernized and liberalized the economy in Cuba, allowing the purchase of microwaves, cell phones computers, among other technologies. He is pursuing an economic model based off of China, which permits for some foreign investment and private enterprise. Castro says he will step down as president at the end of his current term in 2018. His likely successor is first vice president Miguel Díaz-Canel Advertisement

The president will meet dissidents of the authoritarian government and give a televised speech from Havana's national theater, Gran Teatro Alicia Alonso.

Air Force One touched down in Havana - in the midst of a torrential downpour - just before 4:30pm ET on Sunday for a visit the White House says will 'deepen' America's relationship with the communist government following more than half a century of tension.

President Obama and his family were whisked off the runway to Old Havana for a tour, but the first family - particularly Sasha Obama - looked less than pleased with the weather as they perched underneath umbrellas.

The heavens opened just before the wheels hit the tarmac in Cuba's capital, with the first drops of rain falling as Obama became the first sitting president in nearly 90 years to visit the island.

As the Obama's taxied towards their motorcade, the president wrote on Twitter: '¿Que bolá Cuba? (What's up Cuba?). Just touched down here, looking forward to meeting and hearing directly from the Cuban people.'

Obama's first stop after landing in Cuba was meeting with staff at the recently re-opened embassy. The inclement weather meant the president chatted with workers at a nearby hotel instead of the consulate.

The U.S. operated out of the embassy during the detente between the U.S. and the Castro regime from 1977 until the summer of 2015, but it was under the authority of the Swiss government, which served as the protecting power.

It officially assumed the role of the United States' mission in Cuba on July 20, 2015, when diplomatic ties were formally restored.

President Barack Obama stepped over a puddle as he and his family toured the cobbled streets of Old Havana

Michelle and Malia Obama were also careful to stay on their feet as they made their way through the old town's center

Long legs: Obama made his way through the rain on an evening that saw him meet with embassy staff at a hotel in Havana

The first day of the trip will see the entire first family, including Michelle Obama's mother, Marian Robinson, take a tour of Old Havana.

As part of their 'cultural outreach' they will stop by the Havana Cathedral to see Cardinal Jaime Ortega. The Cuban cardinal played a crucial role in the thawing of relations between the United States and his home country.

The first family's visit to his church will 'mark the important role of the Catholic Church in the lives of the Cuban people', the White House said this week on a planning call, 'and in the increasing relations' between the two countries.

On Monday morning, the president will honor Cuban revolutionary José Marti, a hero in the Cuban revolt against Spain, by laying a wreath at his memorial, a 358ft tower, in Havana's Plaza de la Revolución, before his meeting with Raul Castro.

The president will be 'very candid about areas of disagreement' at their meeting, Deputy National Security Adviser Ben Rhodes said, 'including the human rights practices that have concerned us in Cuba and our support for universal values in Cuba'.

Both presidents are expected to deliver statements after the meeting and the White House indicated on Friday that Obama would likely take questions from the Press, although a formal news conference has not been scheduled.

Obama will not meet with ex-Cuban dictator Fidel Castro while he is in town. The 1950s era Cuban revolutionary turned over power to his brother in 2006 temporarily for health reasons and made the transition permanent in 2008.

The 88-year-old has rarely been seen in public since handing over power, prompting rumors that he is in failing health. His last observed outing was in February.

'Neither we nor the Cubans have pursued such a meeting,' Rhodes said Wednesday.

Air Force One touched down in Havana - in the pouring rain - just before 4:30pm ET on Sunday for the visit the White House says will 'deepen' America's relationship with the government following more than half a century of tension

Obama, who arrived at Havana international airport on Sunday afternoon, was instead met by Cuba's foreign minister - and a deluge of pouring rain

Mrs Obama will meanwhile on Monday meet with female Cuban students, some of whom have studied in the U.S., as part of her Let Girls Learn initiative, the White House said.

The president and first lady will participate in a State dinner hosted by the Cuban government at the Palace of the Revolution.

The following morning the president will give a speech, in which he will 'review the complicated history' between the countries, the White House says, 'but also to look forward to the future, and to lay out his vision for how the United States and Cuban can work together, to how the Cuban people can continue to pursue a better life.'

Afterward he will meet with political dissidents before attending an exhibition game between the Tampa Bay Rays and Cuban National Team.

DETAILS OF THE OBAMA FAMILY'S TOUR OF HAVANA, CUBA, IN FULL The first day of the president's trip to Cuba will see the entire first family, including Michelle Obama's mother, Marian Robinson, take a tour of Old Havana. The setting for portions of The Godfather II, the movie was actually filmed in Santo Domingo, Dominican Republic. As part of their 'cultural outreach' they will stop by the Havana Cathedral to see Cardinal Jaime Ortega. The Cuban cardinal played a crucial role in the thawing of relations between the United States, the White House says. The cathedral is a UNESCO designated a World Heritage Site. They'll also greet staff at the recently reopened U.S. Embassy in Cuba. The president will honor José Marti, a hero in the Cuban revolt against Spain, by laying a wreath at his memorial on, a 358 foot tower, in Havana's Plaza de la Revolución, on Monday morning. That president and first lady will participate in a State dinner hosted by the Cuban government at the Palace of the Revolution. The following morning the president will give a speech at the Havana's national theater, Gran Teatro Alicia Alonso. The whole family will attend an exhibition game between the Tampa Bay Rays and Cuban National Team at their stadium before leaving for Argentina on Tuesday afternoon. Advertisement