Indonesia

# On 21 April, the Indonesian National Police disrupted a planned terrorist attack on Christ Cathedral, Gading Serpong, Tangerang, Banten.  A number of suspects have been detained and a quantity of explosive material was recovered.

# On 15 April a suicide bomber attacked a mosque in the West Java town of Cirebon, killing himself and leaving at least 26 people wounded.
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There is a high threat from terrorism throughout Indonesia. Terrorist groups continue to plan attacks and have the capacity and intent to carry out these attacks at any time and anywhere in the country. Attacks could be indiscriminate, including in places frequented by expatriates and foreign travellers. Terrorist attacks in Jakarta on 17 July 2009 and in Bali in October 2005 and October 2002 killed and injured a number of British nationals. See Safety and Security - Terrorism.
# You should be particularly vigilant during holiday periods such as Easter and Christmas, which can be a time of heightened tensions in Indonesia. In the past, attacks have occurred during holiday periods in Indonesia. In recent years, the Indonesian Police have announced tightened security in public places such as airports, places of worship and major tourist areas over the holiday periods. You should exercise caution when visiting locations where large groups of people gather or which are known to be frequented by foreigners.
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You should exercise caution when travelling to Aceh, Central Sulawesi Province (especially Palu, Poso and Tentena), Maluku Province (especially Ambon) and Papua Province.  On 24 January 2010 a number of people were injured in an armed attack on a vehicle travelling between Timika and Tembagapura in Papua. You should be alert to the potential for politically motivated violence. See the Safety and Security -  Local Travel.
# With the exception of Garuda Airlines, Mandala Airlines (not currently operating), Airfast and Ekspres Transportasi Antarbenua (operating as PremiAir), Metro Batavia and Indonesia Air Asia, all other Indonesian passenger airlines are refused permission to operate services to the EU because Indonesia is unable to ensure that these airlines meet international safety standards. We advise you to avoid flying with Indonesian passenger airlines subject to the EU operating ban. See Safety and Security - Air Travel.

# Indonesia sits along a volatile seismic strip called the 'Ring of Fire'. Volcanic eruptions and earthquakes occur regularly and tsunamis are possible. See Natural Disasters.

# Outbreaks of Avian Influenza (Bird Flu) in Indonesia have led to over 100 reported human fatalities. See the Health - Avian Influenza.

# Around 150,000 British nationals visit Indonesia every year (Source: Office for National Statistics (ONS)). See General - Consular Assistance Statistics. Penalties for illegal drug importation and use are severe and can include the death penalty.

# You should take out comprehensive travel and medical insurance before travelling. See the General - Insurance .

http://www.fco.gov.uk/en/travel-and-living-abroad/travel-advice-by-country/asia-oceania/indonesia1