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Meanwhile , by 2003 concern over North Korea 's pursuit of nuclear weapons and missiles and over China 's growing power led to the removal of some legal restrictions on the government 's ability to respond militarily to an attack , and the Liberal Democrats proposed amending the constitution 's limits on its defense forces . Postwar reconstruction was abetted by enormous amounts of foreign aid ( in the North from Communist countries and in the South chiefly from the United States ) and intensive government economic development programs . The railroads have been extensively rebuilt , and in the South high-speed lines connect Seoul with Daegu and Busan in the southeast and Gwangju in the southwest . We must have the will to face difficult challenges and determined enemies - - and the wisdom to face them together.Some in this chamber are new to the House and Senate , and I congratulate the Democrat majority . " There is a renaissance of new construction of these facilities across the country , and we're seeing some very attractive facilities .