China says all welcome at Silk Road forum after U.S. complains over North Korea

By Ben BlanchardBEIJING (Reuters) - China welcomes all countries to a forum this weekend on China's new Silk Road plan, the foreign ministry said on Saturday, after the United States warned China that North Korea's attendance could affect other countries' participation.Two sources with knowledge of the situation said the U.S. embassy in Beijing had submitted a diplomatic note to China's foreign ministry, saying inviting North Korea sent the wrong message at a time when the world was trying to pr