Latvia seeks cooperation from Baltic Sea allies in finding cause of undersea data cable rupture - Baltic Sea nations seek to limit further incidents after cable breaches - Disappearing coast. As the Baltic Sea erodes Latvia's shoreline, locals grapple with what's lost to the advancing tide - Baltic beauty: exploring Estonia's northern coast - Russia moves to extend its maritime borders, angering Baltic Sea nations - Baltic Sea countries remain vigilant after Moscow mulls altering its sea border - Baltic Sea nations react warily to a reported Russian proposal to revise its maritime border