Question: what are the contested territorial disputes that are border to Brazil?
About the article "Brazil", section "Military".

Candidate passages:
South America is a relatively peaceful continent in which wars are a rare event; as a result, Brazil hasn't had its territory invaded since year 1865 during the Paraguayan War.
Additionally, Brazil has no contested territorial disputes with any of its neighbours and neither does it have rivalries, like Chile and Bolivia have with each other.
However, Brazil is the only country besides China and Russia that has land borders with 10 or more nations.
Moreover, Brazil has of land borders and of coastline to be patrolled and defended.
Overall, the Armed Forces have to defend 8.5 million km2 (around 3.2 million sq.
mi.)
of land and patrol 4.4 million km2 (around 1.7 million sq.
mi.)
of territorial waters - or "Blue Amazon", as the Brazilian Navy calls them.
In order to achieve this mission properly, significant quantities of both man power and funding have to be made available. 
The borders of Suriname are subject to longstanding disputes between Suriname and its neighbouring countries Guyana and French Guiana.
Only the border with Brazil is uncontroversial since 1906. 
The Malaysian and Singaporean governments have been involved in a range of disputes and disagreements which have tested the bilateral relations between the two countries.
Most of these, including that over Keretapi Tanah Melayu, or Malayan Railway, land in Singapore, are not territorial or border disputes as they do not involve questions of sovereignty over territory or territorial waters.
There have, however, been two disputes concerning sovereignty of territory along the Malaysia–Singapore border.
The more well-known one is that over Pedra Branca, which the International Court of Justice decided in Singapore's favour on 23 May 2008.
Another case arose from a "complaint" by Malaysia over reclamation carried out by Singapore at territorial waters adjacent to the border with Malaysia.
The dispute was submitted to the International Tribunal for the Law of the Sea in Hamburg by Malaysia on 4 September 2003. 
The PRC is in a number of international territorial disputes, several of which involved the Sino-Russian border.
Although the great majority of them are now resolved, China's territorial disputes have led to several localized wars in the last 50 years, including the Sino-Indian War in 1962, the Sino-Soviet border conflict in 1969 and the Sino-Vietnam War in 1979.
In 2001, China and Russia signed the Treaty of Good-Neighborliness and Friendly Cooperation, which ended the conflict.
Other territorial disputes include islands in the East and South China Seas, and undefined or disputed borders with India and North Korea. 
The armed forces of Brazil are the second-largest in Latin America, consist of the Brazilian Army, the Brazilian Navy, and the Brazilian Air Force with a total of 371,199 active personnel.
The Army has 235,978 active personnel.
The Military Police (States' Military Police) is described as an ancillary force of the Army by the constitution, but is under the control of each state's governor.
The Navy once operated some of the most powerful warships in the world with the two dreadnoughts, which sparked a South American dreadnought race between Argentina, Brazil, and Chile.
Today, it is a green water force and one of the ten navies that possesses an aircraft carrier.
The Air Force has about 700 manned aircraft in service.
Brazil has not been invaded since 1865 during the Paraguayan War.
Additionally, Brazil has no contested territorial disputes with any of its neighbours and neither does it have rivalries, like Chile and Bolivia have with each other.
Since 1648 the Brazilian Armed Forces have been relied upon to fight in defense of Brazilian sovereignty and to suppress civil rebellions.
The Brazilian military has also three times intervened militarily to overthrow the Brazilian government.
It has built a tradition of participating in UN peacekeeping missions such as in Haiti and East Timor.