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Security in Rio de Janeiro

Dear colleagues,

News outlets such as the BBC have recently reported developments concerning security in Rio de Janeiro. We wish to clarify to our international colleagues the significance of these events, which we view as very positive for the organization of ICM 2018.

The state government of Rio de Janeiro has been experiencing serious fiscal difficulties over the last few years, partly due to the decline of petrol market prices, the state's main source of income. Since in Brazil security is mostly responsibility of the states, this has caused substantial reduction of police budgets.

The situation has come to a head during Carnival, a notoriously difficult time of the year from the security point of view, as Rio welcomes over 1.5 million tourists and the streets are crowded with people celebrating. Although crime statistics for this year's Carnival were no worse than last year's, and much better than those for 2016 and 2015, the state government felt unable to cope and asked for the federal government to intervene.

"Intervention" is a formal transfer of constitutional prerogatives, which has been approved by the national parliament and is scheduled to run through December 2018. It will allow the federal government to use its vastly superior resources, both financial and human, to improve the situation in the short term and, even more importantly, to restructure the whole security apparatus in the state in a more permanent way.

The initiative has the collaboration and support of all three branches of government - administration, parliament and judiciary ( and ) - and is most welcome by the population of Rio de Janeiro, with an 83% approval rate.

Thus the Organizing Committee is confident that ICM participants will have a privileged opportunity to enjoy one of the most interesting cities in the world at its best (check our welcome video at

We look forward to welcoming you to Rio de Janeiro!

Marcelo Viana
Chair of the Organizing Committee


About ICM

The most important Mathematics event will be held in Brazil.


The late nineteenth century was a remarkable period in the history of the sciences. Mathematics, in particular, saw the emergence of a series of discoveries ranging from the logical foundations of the discipline to traditional areas, such as algebra and geometry.
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Previous Congresses

Learn when and where the previous ICM events occurred.
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The International Congress of Mathematicians is also the stage for bestowing the most prestigious awards in mathematics.
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About Rio de Janeiro

Conference venue Riocentro is 32 km away from Galeão–Antônio Carlos Jobim International Airport (GIG) and 35km away from the Santos Dumont Airport (SDU) There are more than 300 weekly direct flights between Rio and foreign cities. Rio is a must on the itinerary of all who visit Brazil.
There are options in all price ranges in the Barra da Tijuca neighborhood, which will host the ICM. Our conference center Riocentro is less than 18km away from some 10,000 hotel rooms.
Subway, buses and BRT are the main means of public transportation in the city. Conference venue Riocentro may be reached by the last two means. Rio’s yellow cabs are a cost-effective option for groups of people. The city also boasts a bike share system.
In Rio de Janeiro, Brazilian cuisine is well represented with several regional specialty restaurants. Barra da Tijuca is one of Rio's largest culinary centers, with a wide selection of bars and restaurants offering the best of local and international cuisine.
Beyond the exuberant natural surroundings, you'll have the opportunity to visit museums, cultural centers and historical buildings, as well as enjoying the performing arts and shopping. Major musical and theatrical productions are always running, as well as the latest movies. By day or by night, Rio de Janeiro offers a wide variety of shopping malls, restaurants and tourist attractions. Rio's largest and most modern entertainment and leisure centers are located in Barra da Tijuca.
The Riocentro Exhibition & Convention Center located in Barra da Tijuca is the largest convention center in Latin America and has hosted many major international events including The United Nations Conference on Environment and Development (UNCED), the 17th World Petroleum Congress of 2002, and Rio+20. Learn more >