2020 Trends in Terrorism: From ISIS Fragmentation to Lone-Actor Attacks | United States Institute of Peace
Hezbollah linked to Burgas bus bombing in Bulgaria - BBC News
Ayman al-Zawahiri | Biography, Death, Location, & Facts | Britannica
In Argentina and Bulgaria, recalling two deadly terrorist attacks - JNS.org
Analysis: The Crimea attack triggered a wave of strikes on Ukraine. But mystery swirls over who blew up Putin's bridge | CNN
Putin says attack on Kerch Bridge to Crimea was a terrorist act : NPR
Ukraine Invasion Rekindles Divisions Over Russia in Bulgaria | Balkan Insight
Bulgaria Charges Teenager With Plotting Terrorist Attack - The New York Times
War on terror - Wikipedia
Europe's terror threat is real. But its cities are much safer than you think | World Economic Forum
From the lefts perspective, why hasn't Poland had any Islamic terrorist attacks in the last 4 years? And why isn't the US implementing these things? - Quora
Bulgaria terrorist attacks 1982-2016 | Statista
Bulgaria condemns terrorist attack in Jerusalem in which teenager died, many injured – The Sofia Globe
St Nedelya Church assault - Wikipedia
Bulgaria jails 2 men for life over 2012 bus bombing – DW – 09/21/2020
The Man Behind Bin Laden | The New Yorker
Putin calls Kerch Bridge attack "a terrorist act" by Kyiv | AP News
Sofia Cautious On Reports Tying Soleimani To 2012 Bulgaria Bombing
The Man Behind Bin Laden | The New Yorker
Bulgaria Arrests Norwegian Suspected of Terrorism Links | Balkan Insight
![The Biggest Terrorist Act In The History of Bulgaria [Colored footage from 1925] - YouTube](https://i.ytimg.com/vi/YALn3PaSIdg/maxresdefault.jpg "The Biggest Terrorist Act In The History of Bulgaria [Colored footage from 1925] - YouTube")
The Biggest Terrorist Act In The History of Bulgaria [Colored footage from 1925] - YouTube
Russian Agents Suspected of Directing Far-Right Group to Mail Bombs in Spain - The New York Times
10 years since 5 Israelis, 1 Bulgarian killed in Burgas bus bombing - Israel News - The Jerusalem Post
Bulgaria: 10 years since the Terrorist Attack on Sarafovo Airport - Novinite.com - Sofia News Agency
How Bulgaria became a terrorist target – Global Public Square - CNN.com Blogs
Hezbollah links seen in 2012 Israeli bus attack in Bulgaria – EURACTIV.com
