Detailed Instructions: Based on the information present in the given passage, you need to write a correct answer to the given question. A correct answer is one that correctly and completely answers the question. Do not write answers that address the question partially or incorrectly. The correct answer must be contained in the given paragraph.
Problem:Paragraph- Sent 1: (CNN) -- Guatemala's government has declared a state of siege and sent hundreds of troops to a northern province where officials say a Mexican drug gang is overtaking towns and threatening residents.
Sent 2: President Alvaro Colom announced the 30-day emergency rule in Alta Verapaz on Sunday.
Sent 3: The rule allows the military to order anyone suspected of conspiring against the government to be arrested and imprisoned without a warrant, the state-run AGN news agency said.
Sent 4: "Starting today, combined forces will retake the streets of Alta Verapaz," a government statement released Sunday morning said.
Sent 5: Government data shows cells of the drug gang known as Los Zetas are in the area to protect drug trafficking paths between Honduras and Mexico, "intimidating the population with their heavy weapons and threatening farmers to give up their land for criminal activities," AGN reported.
Sent 6: The state of siege also allows the government to place greater restrictions on public gatherings, travel visas and gun licenses, among other things, according to AGN.
Sent 7: "The population should be calm.
Sent 8: What we are doing is not intended to persecute honest, working people," Interior Minister Carlos Menocal told reporters.
Sent 9: Menocal said operations in the coming days would aim to boost regional security, regain control of territory, identify criminal gangs and capture their members.
Sent 10: In an interview with CNN en Espanol last month, Menocal said his country needed more help from the United States to combat cartels, which were increasingly carving out new drug transport paths.
Sent 11: "In the end, the large majority of drugs travel through Central America, and the assignment of resources or the financial support of the United States government is not the same as Colombia and Mexico receive," he said.
Sent 12: Menocal said clashes between authorities and Los Zetas had notably increased. 
Question: Who is the president of Guatemala?.
Solution:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Alvaro Colom is the president of Guatemala.