<p>Munich: NATO Secretary-General Jens Stoltenberg said on Friday he was "deeply saddened and disturbed" by the reports on the death of Russian opposition leader Alexei Navalny.</p><p>"We need to establish all the facts, and Russia needs to answer all the serious questions about the circumstances of his death," Stoltenberg said. </p>
<p>Munich: NATO Secretary-General Jens Stoltenberg said on Friday he was "deeply saddened and disturbed" by the reports on the death of Russian opposition leader Alexei Navalny.</p><p>"We need to establish all the facts, and Russia needs to answer all the serious questions about the circumstances of his death," Stoltenberg said. </p>