I agree with Steve K. By the definitions he gave I'd say that last week's villains were terrorists. I can't remember whether I heard them so called by the BBC. If they didn't call them "terrorists", I can't explain why. Ask the BBC.
Of course, if your talking about "Russinan Chechen rebels" in general then I don't think it would be correct to call them all "terrorists". This goes back to the definitions of the terms summed up well, in my opinion, by Steve K. A rebel is not necessarily a terrorist.
Another small correction. Valdemar is correct saying that the siege was in Russia. He's also correct in saying that it was not in Chechnya. But if you write "... the siege was in Russia, not in Chechnya.", the impression you give is that Chechnya is not part of Russia.
Chechnya is part of Russia. Chechnya is one of the twenty-one republics of the Russian Federation. This is what the whole fight is about: the separatists want independance for Chechnya from Russia.
The following is taken from the "CIA World Factbook" (& rearranged by me to make it more comprehensible).
http://www.cia.gov/cia/publications/factbook/geos/rs.html
49 oblasts, 21 republics*, 10 autonomous okrugs**, 6 krays***, 2 federal cities**** and 1 autonomous oblast*****.
Autonomous Oblast*****
(avtonomnaya oblast');
1 Yevreyskaya*****;
Federal Cities
(singular - gorod)****,
1 Moskva (Moscow)****, 2 Sankt-Peterburg (Saint Petersburg)****,
Krays***
(krayev, singular - kray),
1 Altayskiy (Barnaul)***, 2 Khabarovskiy***, 3 Krasnodarskiy***, 4 Krasnoyarskiy***, 5 Primorskiy (Vladivostok)***, 6 Stavropol'skiy***,
Autonomous Okrugs**
(avtonomnykh okrugov, singular - avtonomnyy okrug),
1 Aginskiy Buryatskiy (Aginskoye)**, 2 Chukotskiy (Anadyr')**, 3 Evenkiyskiy (Tura)**, 4 Khanty-Mansiyskiy (Khanty-Mansiysk)**, 5 Koryakskiy (Palana)**, 6 Nenetskiy (Nar'yan-Mar)**, 7 Komi-Permyatskiy (Kudymkar)**, 8 Taymyrskiy (Dudinka)**, 9 Ust'-Ordynskiy Buryatskiy (Ust'-Ordynskiy)**, 10 Yamalo-Nenetskiy (Salekhard)**,
Republics*
(respublik, singular - respublika),
1 Adygeya (Maykop)*, 2 Altay (Gorno-Altaysk)*, 3 Bashkortostan (Ufa)*, 4 Buryatiya (Ulan-Ude)*, 5 Chechnya (Groznyy)*, 6 Chuvashiya (Cheboksary)*, 7 Dagestan (Makhachkala)*, 8 Ingushetiya (Nazran')*, 9 Kabardino-Balkariya (Nal'chik)*, 10 Kalmykiya (Elista)*, 11 Karachayevo-Cherkesiya (Cherkessk)*, 12 Kareliya (Petrozavodsk)*, 13 Khakasiya (Abakan)*, 14 Komi (Syktyvkar)*, 15 Mariy-El (Yoshkar-Ola)*, 16 Mordoviya (Saransk)*, 17 Sakha (Yakutiya)*, 18 Severnaya Osetiya-Alaniya [North Ossetia] (Vladikavkaz)*, 19 Tatarstan (Kazan')*, 20 Tyva (Kyzyl)*, 21 Udmurtiya (Izhevsk)*,
Oblasts
(oblastey, singular - oblast),
1 Amurskaya (Blagoveshchensk), 2 Arkhangel'skaya, 3 Astrakhanskaya, 4 Belgorodskaya, 5 Bryanskaya, 6 Chelyabinskaya, 7 Chitinskaya, 8 Irkutskaya, 9 Ivanovskaya, 10 Kaliningradskaya, 11 Kaluzhskaya, 12 Kamchatskaya (Petropavlovsk-Kamchatskiy), 13 Kemerovskaya, 14 Kirovskaya, 15 Kostromskaya, 16 Kurganskaya, 17 Kurskaya, 18 Leningradskaya, 19 Lipetskaya, 20 Magadanskaya, 21 Moskovskaya, 22 Murmanskaya, 23 Nizhegorodskaya, 24 Novgorodskaya, 25 Novosibirskaya, 26 Omskaya, 27 Orenburgskaya, 28 Orlovskaya (Orel), 29 Penzenskaya, 30 Permskaya, 31 Pskovskaya, 32 Rostovskaya, 33 Ryazanskaya, 34 Sakhalinskaya (Yuzhno-Sakhalinsk), 35 Samarskaya, 36Saratovskaya, 37 Smolenskaya, 38 Sverdlovskaya (Yekaterinburg), 39 Tambovskaya, 40 Tomskaya, 41 Tul'skaya, 42 Tverskaya, 43 Tyumenskaya, 44 Ul'yanovskaya, 45 Vladimirskaya, 46 Volgogradskaya, 47 Vologodskaya, 48 Voronezhskaya, 49 Yaroslavskaya,
note - when using a place name with an adjectival ending 'skaya' or 'skiy,' the word Oblast' or Avonomnyy Okrug or Kray should be added to the place name
note: administrative divisions have the same names as their administrative centres (exceptions have the administrative centre name following in parentheses)