löschen per dropdown

<form action="deletenewsaction.php" method="post">
    <fieldset>
        <legend>News löschen</legend>
        <label>News: <select name="NewsID">
            <option value="0">Bitte wählen</option>
            <?php foreach ($data['News'] as $key => $value) { ?>
            <option value="<?php echo $key; ?>">(<?php echo htmlspecialchars($value['Datum']); ?>)
                <?php echo htmlspecialchars($value['Titel']); ?></option>
            <?php } ?>
            </select></label>
        <input type="submit" name="formaction" value="News löschen" />
    </fieldset>
</form>

<?php
$ret = array();
$ret['filename'] = 'news_loeschen.php';
$ret['data'] = array();
if ('POST' != $_SERVER['REQUEST_METHOD']) {
    $sql = 'SELECT
                ID,
                Titel,
                Datum
            FROM
                News
            ORDER BY
                Datum DESC';
    if (!$result = $db->query($sql)) {
        return $db->error;
    }
    $News = array();
    while ($row = $result->fetch_assoc()) {
        $News[$row['ID']] = array('Datum' => $row['Datum'], 'Titel' => $row['Titel']);
    }
    $ret['data']['News'] = $News;
    return $ret;
}
?>