The clash was a result of deteriorating ethnic tensions in Croatia during the breakup of Yugoslavia.
Relations deteriorated, and tensions grew, when North Korea conducted nuclear and missile tests earlier this year.
There are numerous instances of good practice in the prison system and many dedicated staff work with shrinking budgets to turn inmates' lives around, but the challenge they face is growing as conditions deteriorate and tensions rise behind bars.
Relations with Europe and the US have deteriorated, and tensions were exacerbated recently when he accused Israel of "genocide… reminiscent of the Holocaust" during the Gaza crisis.
But in subsequent years the relationship has again deteriorated amid tensions over Ukraine, which resulted in painful sanctions for Russia Syriaa, where Russia has sidelined the U.S. during recent peace efforts; and now the hacking allegations.
Officials said they were concerned about tensions and deteriorating human rights in China's Tibetan areas, urging Beijing to resume talks with the Dalai Lama or his followers without preconditions.
Conditions in the camp are steadily deteriorating, with reports of tensions, lack of adequate sanitation facilities and rampant disease.
Attacks on Sunni places of worship have spiked in recent months as security has deteriorated and sectarian tensions have grown.
"We are concerned about continuing tensions and the deteriorating human rights situation in Tibetan areas of China," Hayden said.
On Tuesday, a South Korean fur-coat maker became the first company to announce it was withdrawing from the Kaesong joint industrial complex in North Korea, a sign that deteriorating inter-Korean relations and tensions over the North's recent nuclear test were jeopardizing the complex, once hailed as a model of future economic cooperation between the two Koreas.
"We are concerned about continuing tensions and the deteriorating human rights situation in Tibetan areas of China".
