GAZA - Israeli tanks entered the eastern area of the Gaza Strip on Tuesday and troops clashed with Palestinian fighters there, wounding at least three militants, witnesses and Palestinian sources said. The Israeli army said it was checking the report.Witnesses said several Israeli tanks, supported by unmanned drones in the sky, entered Gaza near the Karni crossing, the main terminal for goods entering and leaving the densely populated strip, but it was not clear what their objective was. Clashes ensued and three militants were wounded, Palestinian sources said.