The key to the map is a colour-coded chart showing the current issues within each country - and their severity.
Rates of violent crime are very low. There is no significant political violence or civil unrest and no sectarian, communal, racial or targeted violence against foreigners. Security and emergency services are effective and infrastructure is sound. Transport services are of a high standard with good safety records and only occasional travel disruption. Industrial action affecting essential services is rare.
Violent crime rates are low and racial, sectarian or political violence or civil unrest is uncommon. If terrorism is a threat, groups have limited operational capabilities, and acts of terrorism are rare. Security and emergency services are adequate and infrastructure is sound. Industrial action and transport disruption are infrequent.
Periodic political unrest, violent protests, insurgency and/or sporadic acts of terrorism occur. Travellers and expatriates may face risk from communal, sectarian or racial violence and violent crime. Capacity of security and emergency services and infrastructure varies. Industrial action can disrupt travel.
Protests are frequently violent and may target or disrupt foreigners; they may be exacerbated by governance issues, including security or law and order capacity. Violent crime or terrorism pose significant direct or incidental risks to travellers and expatriates. Communal, sectarian or racial violence is common and foreigners may be directly targeted. Certain parts of the country are inaccessible or off-limits to the traveller.
Government control and law and order may be minimal or non-existent across large areas. Serious threat of violent attacks by armed groups targeting travellers and expatriates. Government and transport services are barely functional. Large parts of the country are inaccessible to foreigners.
Source : http://www.dailymail.co.uk/travel/travel_news/article-3349682/Brits-biggest-travellers-concerned-potential-dangers-New-map-reveals-riskiest-destinations-tourists-world.html345