They said the tanks crossed about 200 meters into northern Gaza, in an area where they have operated frequently in the past. No clashes were reported.
The Israeli military had no immediate comment.
Israel has begun military operations against Gaza militants who have fired dozens of rockets at Israel in the past three days. Up to now the operations have been confined to airstrikes.
Russian Finance Minister Anton Siluanov announced a possible move that Russia can take in response to new US sanctions
Not that long ago, American soldiers would train their skills to counter insurgent and partisan military organizations. These days, they are trained to show resistance to the regular army of a potential adversary
The Central Bank of Turkey announced measures to protect the financial market of Turkey against the background of the collapse of the Turkish lira and conflict of interests with the United States of America