Argentina's Navy could not confirm Sunday if seven brief satellite calls received a day prior were from a lost submarine with 44 crew members onboard. ... Navy has intensified its aerial search off the country's southern Atlantic coast after adverse weather conditions spurred waves up to 26 feet and made a maritime search difficult. ... Enrique Balbi said the low-frequency satellite signals received Saturday lasted a "few seconds," but had not connected with a base, partly due to inclement weather. The communication attempts were originally thought to indicate that the crew was trying to re-establish contact. On Sunday, search units...