By Steve Holland and Doina Chiacu WASHINGTON (Reuters) -U.S. President Joe Biden announced on Wednesday a new $700 million weapons package for Ukraine that will include high mobility artillery rocket systems, which can accurately hit targets as far away as 80 km (50 miles). “The United States will stand with our Ukrainian partners and continue to provide Ukraine with weapons and equipment to defend itself,” Biden said in a statement. Biden announced the plan to give Ukraine precision HIMARS rocket systems after receiving assurances from Kyiv that it would not use them to hit targets inside of …