India has a number of (sometimes armed) dissident groups championing local causes who have employed the same tried-and-tested techniques of rebel groups everywhere: assassinations, and bomb attacks on government infrastructure, public transport, religious centres, tourist sites and markets.
Certain areas are prone to insurgent violence – specifically Kashmir and remote tribal regions in Bihar, Jharkhand, Chhattisgarh and Odisha, but also occasionally in states in the Northeast Region such as Assam, Manipur and Nagaland. Read the latest government travel advisory for reports on areas that are considered unsafe. More up-to-date, perhaps, are websites such as www.satp.org, http://cdpsindia.org and www.globalsecurity.org.
Curfews and strikes can close the roads (as well as banks, shops etc) for days on end in sensitive regions like Kashmir and Assam.
International terrorism is as much of a risk in Europe or the US, so this is no reason not to go to India, but it makes sense to check the local security situation carefully before travelling (especially in high-risk areas).
Although it’s rarely printed in menus, some restaurants in popular tourist centres will clandestinely whip up bhang lassi, a yoghurt and iced-water beverage laced with cannabis (and occasionally other narcotics). Commonly dubbed ‘special lassi’, this often potent concoction can cause varying degrees of ecstasy, drawn-out delirium, hallucination, nausea and paranoia. Some travellers have been ill for several days, robbed or hurt in accidents after drinking this fickle brew. A few towns have legal (controlled) bhang outlets. While these legal bhang sellers are happy to sell to foreigners, the bhang is intended for religious purposes. For travellers, buying from a legal shop is not a protection against being arrested for possession.
The following government websites offer travel advice and information on current hotspots.
Australian Department of Foreign Affairs (www.smartraveller.gov.au)
British Foreign Office (www.gov.uk/foreign-travel-advice)
Canadian Department of Foreign Affairs (www.voyage.gc.ca)
Dutch Ministry of Foreign Affairs (www.government.nl)
German Foreign Office (www.auswaertiges-amt.de)
Japanese Ministry of Foreign Affairs (www.mofa.go.jp)
New Zealand Ministry of Foreign Affairs & Trade (https://safetravel.govt.nz/health-and-travel)
Swiss Department of Foreign Affairs (www.eda.admin.ch)
US State Department (http://travel.state.gov)