South Korea warns of possible 'retaliatory terror' from the North following mass defection
http://www.nj.com/breakingnews/index.ssf?/cgi-free/getstory_ssf.cgi?a0423_BC_Koreas-TerrorThreat&&news&tradecentercrash
Bomb alerts ground three flights
http://www.theaustralian.news.com.au/common/story_page/0,5744,10464223%255E1702,00.html